{{Short description|Small tree-dwelling mammals that are members of the squirrel family (Sciuridae)}} [[File:Eastern Grey Squirrel.jpg|thumb|Eastern gray squirrel (''Sciurus carolinensis'')]] [[File:Callosciurus prevosti.jpg|thumb|Prevost's squirrel (''Callosciurus prevostii'')]] '''Tree squirrels''' are the members of the squirrel family (Sciuridae) commonly just referred to as "squirrels". They include more than 100 arboreal species native to all continents except Antarctica and Oceania.<ref name=Menkhorst>{{cite book|author1=Menkhorst, P. |author2=Knight, F. |year=2001|title=A Field Guide to the Mammals of Australia|publisher=Oxford University Press|page=204|isbn=0-19-550870-X}}</ref><ref name=Seebeck>{{cite web|last=Seebeck|first=J. H.|title=Sciuridae|url=http://www.scarysquirrel.org/vacation/australia/fauna.pdf|work=Fauna of Australia|access-date=2013-11-24|url-status=usurped|archive-url=https://web.archive.org/web/20150117031835/http://www.scarysquirrel.org/vacation/australia/fauna.pdf|archive-date=2015-01-17}}</ref><ref name="Musser">{{cite encyclopedia|last=Musser|first=Guy G.|encyclopedia=Encyclopædia Britannica online Academic edition|title=Squirrel|url=http://www.search.eb.com/eb/article-226105|archive-url=https://archive.today/20130102124806/http://www.search.eb.com/eb/article-226105|url-status=dead|archive-date=2013-01-02|access-date= 2010-02-20|year=2007|publisher=Encyclopædia Britannica|location=Chicago, Illinois|oclc=263690320}}</ref>{{efn|There is a small introduced population of five-lined palm squirrels near Perth.}}
They do not form a single natural, or monophyletic, group; they are variously related to others in the squirrel family, including ground squirrels, flying squirrels, marmots, and chipmunks. The defining characteristic used to determine which species of Sciuridae are tree squirrels is dependent on their habitat rather than their physiology. Tree squirrels live mostly among trees, as opposed to those that live in burrows in the ground or among rocks. An exception is the flying squirrel that also makes its home in trees, but has a physiological distinction separating it from its tree squirrel cousins: special flaps of skin called patagia, acting as glider wings, which allow gliding flight.
The best-known genus of tree squirrels is ''Sciurus'', which includes the eastern gray squirrel of North America (introduced to Great Britain in the 1870s),<ref>{{cite web |title=History of grey squirrels in UK | date = 18 March 2014 | url = https://www.telegraph.co.uk/news/earth/wildlife/10705527/History-of-grey-squirrels-in-UK.html | access-date = May 30, 2020}}</ref> the red squirrel of Eurasia, and the North American fox squirrel, among many others. Many tree squirrel species have adapted to human-altered environments such as rural farms, suburban backyards and urban parks.
==Classification== [[File:Indian Palm Squirrel Bangalore 2009.jpg|thumb|Indian palm squirrel (''Funambulus palmarum'')]] [[File:Tamiasciurus hudsonicus CT.jpg|thumb|American red squirrel (''Tamiasciurus hudsonicus'')]] {{further|List of sciurids}} Current taxonomy, based on genetic data, splits the tree squirrels into several subfamilies. The following genera of the squirrel family are classified as tree squirrels.<ref name="Musser" /><ref name="Thorington">{{cite book|last1=Thorington| first1=R.W. Jr. |last2=Hoffmann|first2=R.S.|year=2005|pages=754–818|editor1-last=Wilson|editor1-first=D.E.|editor2-last=Reeder|editor2-first=D.M|url=http://www.bucknell.edu/msw3|chapter=Family Sciuridae|chapter-url=https://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?id=12400001|title=Mammal Species of the World: a taxonomic and geographic reference|edition=3rd|publisher=The Johns Hopkins University Press|isbn=0-8018-8221-4|oclc=26158608}}</ref>
*'''Subfamily Ratufinae''' **Genus ''Ratufa'' (Asian giant squirrels) *'''Subfamily Sciurillinae''' **Genus ''Sciurillus'' (South American pygmy squirrel) *'''Subfamily Sciurinae''' **Tribe Sciurini (mostly American tree squirrels) ***Genus ''Microsciurus'' (American dwarf squirrels) ***Genus ''Rheithrosciurus'' (Borneo tufted ground squirrel)<!--EB lists this as a tree squirrel--> ***Genus ''Sciurus'' (Eurasian and American tree squirrels) ***Genus ''Syntheosciurus'' (Central American mountain squirrel) ***Genus ''Tamiasciurus'' (American pine squirrels) *'''Subfamily Callosciurinae''' (Asian tree squirrels) **Genus ''Callosciurus'' (Oriental tree squirrels, introduced into Europe and South America) **Genus ''Exilisciurus'' (Asian pygmy squirrels) **Genus ''Funambulus'' (Asian palm squirrels, introduced into Australia in the 1920s)<ref name="Menkhorst" /><ref name="Seebeck" /> **Genus ''Glyphotes'' (sculptor squirrel) **Genus ''Nannosciurus'' (Asian dwarf squirrel) **Genus ''Prosciurillus'' (Sulawesi dwarf squirrels) **Genus ''Rubrisciurus'' (Sulawesi giant squirrel) **Genus ''Sundasciurus'' (Sunda squirrels) **Genus ''Tamiops'' (Asian striped squirrels) *'''Subfamily Xerinae''' **Tribe Protoxerini (African tree squirrels) ***Genus ''Epixerus'' (African palm squirrels) ***Genus ''Funisciurus'' (rope squirrels) ***Genus ''Heliosciurus'' (sun squirrels) ***Genus ''Myosciurus'' (African pygmy squirrel) ***Genus ''Paraxerus'' (bush squirrels) ***Genus ''Protoxerus'' (African giant squirrels)
== Relationship with humans == {{anchor|Relationship with humans}} Squirrels are generally inquisitive and persistent animals. In residential neighborhoods, they are notorious for circumventing obstacles in order to eat from bird feeders. Although they are expert climbers, and primarily arboreal, some species of squirrels also thrive in urban environments, where they have adapted to humans.
=== As pets === [[File:Bruges Public Library Manuscript Stichting van Caloen 010a folio 7r.jpg|thumb|Depiction of a pet squirrel on a leash with a feeder in a 14th-century antiphonary (Bruges Public Library, MS. SVC 010A)]] Squirrels have been kept as pets in Western society at least until the 19th century. Because of their small size and tame nature, they were especially popular with women and the clergy.<ref>Kathleen Walker-Meikle, ''Medieval Pets'', Woodbridge: The Boydell Press, 2012, p. 14 et passim</ref>
=== As pests === {{anchor|As pests}} {{see also|Nuisance wildlife management|Electrical disruptions caused by squirrels}} [[File:Iron silo bird feeder.jpg|thumb|Iron bird feeder advertised as being "squirrel-proof and bear-resistant"]] Squirrels are sometimes considered pests because of their propensity to chew on various edible and inedible objects, and their stubborn persistence in trying to get what they want. Their characteristic gnawing trait also aids in maintaining sharp teeth, and because their teeth grow continuously, prevents their over-growth. On occasion, squirrels will chew through plastic and even metal to get to the food.
Tree squirrels may bury food in the ground for later retrieval. Squirrels use their keen sense of smell to search for buried food, but can dig numerous holes in the process. This may become an annoyance to gardeners with strict landscape requirements, especially when the garden contains edibles.
Homeowners in areas with a heavy squirrel population must be vigilant in keeping attics, basements, and sheds carefully sealed to prevent property damage caused by nesting squirrels.<ref name=SqAttic>{{cite web|title=Guide to Safe Removal|url=http://www.squirrel-attic.com/|work=Squirrels in the Attic|access-date=19 April 2012}}</ref><ref name=Byron>{{cite news|last=Byron|first=Ellen|title=Critter Counteroffensive|newspaper=Wall Street Journal|date=February 27, 2013}}</ref><ref name=UIExt>{{cite web|last=University of Illinois Extension|title=Tree Squirrels > Damage Prevention and Control Measures|url=http://web.extension.illinois.edu/wildlife/directory_show.cfm?species=treesquirrels|work=Living with Wildlife in Illinois|publisher=University of Illinois Board of Trustees|access-date=12 March 2013}}</ref> A squirrel nest is called a "drey".
Squirrels can create serious fire hazards when they break into buildings. They often treat exposed power cables as tree branches, and gnaw on the electrical insulation. The resulting exposed conductors can short out, causing a fire. For this reason alone, squirrel nests inside buildings cannot be safely ignored. A squirrel nest will also cause problems with noise, excreta, unpleasant odors, and eventual structural damage.<ref name="SqAttic"/><ref name="UIExt" />
Some homeowners resort to more interesting ways of dealing with this problem, such as collecting and placing fur from pets such as domestic cats and dogs in attics. It is thought that this fur would indicate to nesting squirrels that a potential predator roams, and will encourage evacuation. Odoriferous repellents, including mothballs and ammonia, are generally ineffective in expelling squirrels from buildings.<ref name="SqAttic"/>
thumb|left|This squirrel has become desensitized to humans. The distance between the squirrel and the camera was less than {{convert|18|in|cm|abbr=on}}.
Once established in a nest, squirrels ignore fake owls and scarecrows, along with bright flashing lights, loud noises, and ultrasonic or electromagnetic devices. However, squirrels must leave the nest to obtain food and water (usually daily, except in bad weather), affording an opportunity to trap them or exclude them from re-entering.<ref name="SqAttic"/><ref name="UIExt" />
To discourage chewing on an object, it can be coated or covered with something to make it distasteful: for instance a soft cloth doused with chili pepper paste or powder.<ref name=DIY>{{cite web|title=Squirrel Control Techniques|url=http://www.doityourself.com/stry/squirrels|work=Do It Yourself|publisher=DoItYourself.com|access-date=19 April 2012}}</ref> Capsaicin and Ro-pel are other forms of repellent.<ref name="UIExt" /> To remain effective, the coating must be reapplied regularly, especially if it is exposed to the weather. Poisoning squirrels can be problematic because of the risks to other animals in the building, and because the odor of a dead squirrel in an attic or wall cavity is very unpleasant and persistent.<ref name="SqAttic"/>
Trapping is often used to remove squirrels from residential structures.<ref name=HTTrap>{{cite web|title=How to Trap a Squirrel |url=http://www.squirrels.org/trapping.html |work=Squirrel Place |publisher=The Squirrel Place |access-date=6 May 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120526121836/http://www.squirrels.org/trapping.html |archive-date=26 May 2012 }}</ref> Effective baits include fruit, peanut butter, nuts, seeds and vanilla extract.<ref name=UrbRanch>{{cite web|title=Controlling Tree Squirrels in Urban Areas|url=http://theurbanrancher.tamu.edu/retiredsite/animals/l1914.pdf|work=Wildlife Damage Management|publisher=Texas Wildlife Damage Management Service|access-date=12 March 2013}}</ref>
An alternative method is to wait until squirrels have left in search of food, and then close up all their access openings, or to install one-way trap doors or a carefully angled pipe.<ref name="UIExt" /> Attempting to get rid of all squirrels in a neighborhood is generally futile; the focus instead should be on physically excluding them from places where they can do damage.<ref name="SqAttic"/> There are other humane techniques to remove squirrels from buildings, but removal is ineffective unless steps are taken to prevent them from immediately re-entering.<ref name="SqAttic"/><ref name="Byron" /><ref name=CAI>{{cite web|title=Peaceful Coexistence|url=http://www.pleasebekind.com/squirrel.html|work=Compassionate Action Institute|publisher=Compassionate Action Institute, Inc.|access-date=19 April 2012|url-status=dead|archive-url=https://web.archive.org/web/20120409055742/http://www.pleasebekind.com/squirrel.html|archive-date=9 April 2012}}</ref>
Squirrels are often the cause of power outages. They can readily climb a power pole and crawl or run along a power cable. The animals will climb onto power transformers or capacitors looking for food, or a place to cache acorns. If they touch a high voltage conductor and a grounded portion of the enclosure at the same time, they are electrocuted, and often cause a short circuit that shuts down equipment. Squirrels have brought down the NASDAQ stock market twice and were responsible for a spate of power outages at the University of Alabama.<ref>{{cite web|url=https://www.tuscaloosanews.com/story/news/2002/01/30/power-outage-short-circuits-some-ua-classes/27817575007/|title=Power outage short-circuits some UA classes|last=Taylor|first=Stephanie|work=Tuscaloosa News|date=29 January 2002|access-date=4 August 2024|archive-url=https://web.archive.org/web/20020201210038/http://www.tuscaloosanews.com/news/stories/15679newsstorypage.html|archive-date=1 February 2002|url-status=dead}}</ref><ref>{{cite news|last=Gilpin|first=Kenneth N.|url=https://www.nytimes.com/1987/12/10/business/stray-squirrel-shuts-down-nasdaq-system.html|title=Stray Squirrel Shuts Down Nasdaq System|work=The New York Times|date=10 December 1987|page=D-21|access-date=4 August 2024|url-access=subscription}}</ref><ref>{{cite web|last=Pinsker|first=Joe|title=The Quiet War Squirrels Are Waging on U.S. Stock Exchanges|url=https://www.theatlantic.com/business/archive/2015/07/squirrels-trading-new-york-stock-exchange/398108/|work=The Atlantic|date=9 July 2015|access-date=4 August 2024|archive-url=https://web.archive.org/web/20150905075407/https://www.theatlantic.com/business/archive/2015/07/squirrels-trading-new-york-stock-exchange/398108/|archive-date=5 September 2015|url-access=limited|url-status=dead}}</ref> To sharpen their teeth, squirrels will often chew on tree branches or even the occasional live power line.<ref name="SqAttic"/> Rubber or plastic plates, or freely rotating sleeves ("squirrel guards") are sometimes used to discourage access to these facilities.<ref name=Gomez>{{cite news|last=Gomez|first=Alan|title=Suicide squirrels driving utilities nuts|url=https://www.usatoday.com/news/nation/2007-03-11-suicide-squirrels_N.htm|access-date=4 August 2024|newspaper=USA Today|date=11 March 2007|archive-url=https://web.archive.org/web/20070314182504/https://www.usatoday.com/news/nation/2007-03-11-suicide-squirrels_N.htm|archive-date=14 March 2007|url-status=dead}}</ref><ref name=CritterGuard>{{cite web|title=Guarding Your Home and Power|url=http://www.critterguard.org/|work=Critter Guard|publisher=Critter Guard, Inc.|access-date=6 May 2012}}</ref>
Squirrels otherwise appear to be safe and pose almost zero risk of transmitting rabies.<ref>{{cite web|url=http://rabies.emedtv.com/rabies/rabies-and-squirrels.html |title=Rabies and Squirrels |publisher=Rabies.emedtv.com |date=2006-10-12 |access-date=2012-05-06}}</ref>
Squirrels cause economic losses to homeowners, nut growers, and forest managers in addition to damage to electric transmission lines. These losses include direct damage to property, repairs, lost revenue and public relations. While dollar costs of these losses are sometimes calculated for isolated incidents, there is no tracking system to determine the total extent of the losses.<ref>{{cite web|url=http://hgic.clemson.edu/pdf/pcwdtree_squirrels.pdf |title=Tree Squirrels – University of Georgia |publisher=Hgic.clemson.edu |access-date=2012-05-06 |url-status=dead |archive-url=https://web.archive.org/web/20081217060323/http://hgic.clemson.edu/pdf/pcwdtree_squirrels.pdf |archive-date=December 17, 2008 }}</ref>
===As roadkill and traffic hazards=== {{anchor|As roadkill and traffic hazards}}
In regions where squirrels are plentiful, roadkill is a common sight on roadways, especially in the spring and fall, when there is a fresh crop of young rodents. Motorists have caused serious accidents by attempting to swerve or stop to avoid a squirrel in the road.<ref name=Marshall>{{cite news|last=Marshall|first=Edward|title=Squirrel blamed for accident: Couple struck head-on after woman swerves to avoid animal|url=http://www.journal-news.net/page/content.detail/id/505127/Squirrel-blamed-for-accident.html|access-date=6 May 2012|newspaper=The Journal (Martinsburg, WV)|date=March 31, 2008|url-status=dead|archive-url=https://web.archive.org/web/20131102003457/http://www.journal-news.net/page/content.detail/id/505127/Squirrel-blamed-for-accident.html|archive-date=2 November 2013}}</ref><ref name=CST>{{cite news|title=Driver says squirrels made him crash into garage |url=http://www.suntimes.com/news/metro/8018878-418/driver-says-squirrels-made-him-crash-into-garage.html |access-date=19 April 2012 |newspaper=Chicago Sun-Times |date=October 3, 2011 |url-status=dead |archive-url=https://web.archive.org/web/20120106204400/http://www.suntimes.com/news/metro/8018878-418/driver-says-squirrels-made-him-crash-into-garage.html |archive-date=January 6, 2012 }}</ref><ref name=Whidbey>{{cite web|title=Confused squirrel causes three-car accident|url=http://www.southwhidbeyrecord.com/news/21576764.html|work=South Whidbey Record|publisher=Sound Publishing Inc.|access-date=19 April 2012|date=25 Jun 2008|url-status=dead|archive-url=https://web.archive.org/web/20131101235927/http://www.southwhidbeyrecord.com/news/21576764.html|archive-date=1 November 2013}}</ref> Evasive maneuvers are difficult since squirrels are much more agile and have much quicker reaction times than motorists in heavy vehicles; the majority of vehicular encounters end with no harm to either party.<ref name=NoSwerve>{{cite news|title=Swerving can be worse than hitting animal on road |url=http://yourlife.usatoday.com/parenting-family/pets/story/2012-01-11/Swerving-can-be-worse-than-hitting-animal-on-road/52495428/1 |access-date=6 May 2012 |newspaper=USA Today |date=11 Jan 2012 |url-status=dead |archive-url=https://web.archive.org/web/20120504083202/http://yourlife.usatoday.com/parenting-family/pets/story/2012-01-11/Swerving-can-be-worse-than-hitting-animal-on-road/52495428/1 |archive-date=May 4, 2012 }}</ref>
An effort to mitigate these hazards to both squirrels and humans is the Nutty Narrows Bridge in Longview, Washington, listed on the National Register of Historic Places. It provides a way for squirrels to cross a busy street safely.
thumb|right|Tree squirrels are a common attraction of many urban parks.
=== As urban wildlife === Tree squirrels are a common type of urban wildlife.<ref>{{cite web|url=http://unis.mcgill.ca/en/uw/mammals/squirrels.html|title=U.N.I.S. Urban Nature Information System: Squirrels|publisher=McGill University, Natural Resources Sciences|access-date=2013-01-10}}</ref> They can be trained to be hand-fed, and will take as much food as is available because they cache the surplus. Squirrels living in parks and campuses<ref>{{cite news|first=Sheridan|last=Hendrix|title=Squirrels reign supreme: Ohio colleges embrace their campus critters|url=https://www.dispatch.com/story/news/education/2024/11/30/from-kent-state-to-oberlin-ohio-colleges-embrace-their-campus-squirrels/70498701007/|work=The Columbus Dispatch|date=2024-11-30|access-date=2024-12-05}}</ref> in cities have learned that humans are typically a ready source of food, either deliberately or from careless disposal of surplus. Some people do "squirrel fishing" as a way of simultaneously playing with and feeding squirrels.
Humans commonly offer various nuts and seeds; however, wildlife rehabilitators in the field have noted that neither raw nor roasted peanuts nor sunflower seeds are healthy for squirrels, because they are deficient in several essential nutrients. This type of deficiency has been found to cause metabolic bone disease, a somewhat common ailment found in malnourished squirrels.<ref>{{cite web | first=Susan | last=Saliga | title=Backyard Squirrel Feeding Tips | work=Wisconsin Squirrel Connection | url= http://wisquirrelrehab.com/backyard.html| access-date=2014-10-23}}</ref><ref>{{cite web | first=Sara | last=Rowe | title=Squirrel Tales: Care Instructions For Infant Squirrels | work=Squirreltales | url=http://www.squirreltales.org/#Section-H | access-date=2007-02-07}}</ref>{{dubious|date=October 2010}}
=== As game === {{anchor|As game}} Squirrels are sometimes hunted as game animals, whether for their fur or as food. In the Middle Ages the red squirrel was hunted for its blue-gray winter coat, traditionally called vair, which now lends its name to a heraldic fur. The hairs from squirrel tails are prized in fly fishing when tying fishing flies.{{citation needed|date=January 2023}}
====In the US==== In many areas of the US, squirrels are still hunted for food, as they were historically.<ref>{{cite book |last1=Kurlanksy |first1=Mark |url=https://archive.org/details/isbn_9781594488658/page/112 |title=The food of a younger land : a portrait of American food: before the national highway system, before chain restaurants, and before frozen food, when the nation's food was seasonal, regional, and traditional: from the lost WPA files |publisher=Riverhead Books |others=United States Works Progress Administration |year=2009 |isbn=978-1-59448-865-8 |location=New York |page=[https://archive.org/details/isbn_9781594488658/page/112 112] |chapter=Reciped from Arkansas |oclc=328071934 |url-access=registration}}</ref><ref>{{cite web|last=Frauenfelder |first=Mark |url=http://www.boingboing.net/2008/09/11/how-to-make-a-squirr.html |title=How to make a squirrel sandwich |publisher=Boing Boing |date=2012-04-30 |access-date=2012-05-06}}</ref><ref name="Apicius2012">{{cite book|author=Apicius|title=Cookery and Dining in Imperial Rome|url=https://books.google.com/books?id=22bOitPwJhwC&pg=PA205|date=7 May 2012|publisher=Courier Corporation|isbn=978-0-486-15649-1|pages=205–}}</ref><ref name="Beard2009 1">{{cite book|first=James|last=Beard|title=James Beard's American Cookery|url=https://books.google.com/books?id=MHbSW8MylhkC&q=Squirrel+has+been+written+about+rapturously+for+years%2C+and+it+has+long+been+associated+with+elegant+dining+as+well+as+with+the+simple+food+of+the+trapper+and+the+nomad.+Fortunately+it+is+plentiful.&pg=PT610|date=28 February 2009|publisher=Little, Brown|isbn=978-0-316-06981-6|pages=610–}}</ref><ref name=fact>[http://www.politifact.com/truth-o-meter/statements/341/ It tasted like chicken]. Retrieved December 19, 2008.</ref> Recipes calling for squirrel even appear in cookbooks, including ''James Beard's American Cookery''<ref name="Beard2009">{{cite book|first=James|last=Beard|title=James Beard's American Cookery|url=https://books.google.com/books?id=MHbSW8MylhkC&q=This+is+one+of+the+most+famous+of+American+dishes%2C+and+I+doubt+if+there+are+two+recipes+alike+for+it...This+is+a+Kentucky+recipe&pg=PT613|date=28 February 2009|publisher=Little, Brown|isbn=978-0-316-06981-6}}</ref> and pre-1997 copies of ''The Joy of Cooking''.<ref name=Colquhoun>{{cite news|last=Colquhoun|first=Kate|title=First, catch your squirrel...|url=https://www.telegraph.co.uk/news/features/3636774/First-catch-your-squirrel....html |archive-url=https://ghostarchive.org/archive/20220112/https://www.telegraph.co.uk/news/features/3636774/First-catch-your-squirrel....html |archive-date=2022-01-12 |url-access=subscription |url-status=live|access-date=6 May 2012|newspaper=The Telegraph|date=28 May 2008}}{{cbignore}}</ref><ref name="Bilger"/> Squirrel meat can be substituted for rabbit or chicken in many recipes and was an ingredient in the original recipe for Brunswick stew, a popular dish in various parts of the Southern US.<ref>{{cite web |date=16 January 2013 |title=Who invented Brunswick stew? |url=http://www.americanfoodroots.com/50-states/who-invented-brunswick-stew/ |access-date=3 October 2014 |website=American Food Roots |archive-date=25 December 2019 |archive-url=https://web.archive.org/web/20191225072537/http://www.americanfoodroots.com/50-states/who-invented-brunswick-stew/ |url-status=dead }}</ref> Other similar stews were also based on squirrel meat, including burgoo and Southern Illinois chowder.
Although squirrel meat is low in fat content, unlike most game meat it has been found by the American Heart Association to be high in cholesterol.<ref name=cookbook>{{cite encyclopedia|title=Squirrel|encyclopedia=Oxford Companion to Food|last=Davidson|first=Alan|page=[https://archive.org/details/oxfordcompaniont00davi_0/page/750 750]|publisher=Oxford University Press|year=1999|isbn=0-19-211579-0|oclc=55747419|url-access=registration|url=https://archive.org/details/oxfordcompaniont00davi_0/page/750}}</ref>
Squirrels Unlimited<ref>{{cite web|title=World Championship Squirrel Cook Off Contact Page|url=http://www.squirrelcookoff.com|website=World Championship Squirrel Cook Off|access-date=2 June 2018}}</ref> host a World Championship Squirrel cook-off each year in Bentonville, Arkansas.<ref>{{cite web|title=Squirrels Unlimited-home|url=http://www.squirrelsunlimitrd.com|website=Squirrels Unlimited|access-date=2 June 2018}}</ref>
====In the UK==== For most of the history of the United Kingdom, squirrel has been a meat not commonly eaten, and even scorned by many.<ref name="nyt09">{{cite news|url=https://www.nytimes.com/2009/01/07/dining/07squirrel.html?_r=3&emc=eta1&pagewanted=all|title=Saving a Squirrel by Eating One|last=Speiler|first=Marlena|date=January 6, 2009|work=The New York Times|access-date=2009-01-16}}</ref> In the early 21st century however, the wild squirrel has become a more popular meat to cook with,<ref name="Colquhoun"/> showing up in restaurants and shops more often in Britain as a fashionable alternative meat.<ref name="nyt09"/><ref name=Burnham>{{cite news|last=Burnham|first=Nigel|title=Eating the enemy: Alien species are being put on the menu in what campaigners say is the perfect green solution to save the UK's native animals|url=https://www.theguardian.com/environment/2009/mar/18/food-environment|access-date=6 May 2012|newspaper=The Guardian|date=17 March 2009}}</ref><ref name=Guardian2009>{{cite news|title=Grey squirrel hunter follows UK pie demand south: Founder of Red Squirrel Protection Partnership says trapping and shooting greys is the only way to save native reds|url=https://www.theguardian.com/environment/2009/may/29/grey-squirrel-hunter-pie-demand|access-date=6 May 2012|newspaper=The Guardian|date=29 May 2009}}</ref> Specifically, Britons are cooking with the invasive grey squirrel, which is praised for its low fat content and the fact that it comes from free range sources.<ref name="Colquhoun"/> Additionally, the novelty of a meat considered unusual or special has contributed to the spread of squirrel consumption.<ref name="nyt09"/> Due to the difficulty of a clean kill and other factors, the majority of squirrel eaten in the UK is acquired from professional hunters, trappers and gamekeepers.<ref name="nyt09"/><ref name="Burnham"/><ref name="Guardian2009"/>
Some Britons are eating grey squirrel as a direct attempt to help the native red squirrel, which has been dwindling since the 19th-century introduction of the grey squirrel, resulting in dramatic habitat loss for the indigenous red squirrels.<ref name="nyt09"/><ref name="Burnham"/><ref name="Guardian2009"/> This factor was marketed by a national "Save Our Squirrels" campaign that used the slogan, "Save a red, eat a grey!"<ref name="nyt09"/>
====Risks of eating==== As with other wild game and fish species, the consumption of squirrels that have been exposed to high levels of pollution or toxic waste poses a health risk to humans. In 2007 in the northern New Jersey community of Ringwood, the New Jersey Department of Health and Senior Services issued a warning to anyone who eats squirrel (especially children and those who are pregnant) to limit their consumption after a lead-contaminated squirrel was found near the Ringwood Mines Landfill.<ref>{{cite news|title=N.J. warns: Don't eat squirrel near dump|first=Jeffrey|last=Wolf|url=http://www.9news.com/news/watercooler/article.aspx?storyid=63739|agency=The Associated Press|publisher=KUSA/KTVD, Multimedia Holdings Corporation|location=Denver, Colorado|year=2007|access-date=22 February 2010}}</ref> Toxic waste had been illegally dumped at this location for many years, before authorities cracked down on this practice in the 1980s.<ref name="Sloan">{{cite news|title=N.J. To Ringwood Residents: Don't eat the squirrel: Toxic dump may have led to lead contamination |first=Christine |last=Sloan |url=http://wcbstv.com/local/ringwood.squirrel.myrtle.2.241671.html |agency=CBS |publisher=CBS Broadcasting Company |location=New York |date=Jan 25, 2007 |access-date=22 February 2010 |url-status=dead |archive-url=https://web.archive.org/web/20091001022309/http://wcbstv.com/local/ringwood.squirrel.myrtle.2.241671.html |archive-date=October 1, 2009 }}</ref>
In 1997, doctors in Kentucky published a paper in the ''Lancet'' that considered a possible association between the local tradition of consuming squirrel brains and five cases of Creutzfeldt–Jakob disease, a rare but serious prion-based disorder. The authors posed this as a mere possibility, unconfirmed by either post-mortem analysis of the patients' brain tissue, or identification of a contagious prion agent in squirrels. Nonetheless, the ''Lancet'' article generated substantial media coverage, including articles in the New Yorker and New York Times.<ref name=Bilger>{{Cite magazine|last=Bilger|first=Burkhard|title=Squirrel and man: is a local custom worth dying for?|magazine=The New Yorker|date=July 17, 2000|pages=58–67|url=http://www.newyorker.com/archive/2000/07/17/2000_07_17_058_TNY_LIBRY_000021264|access-date=19 February 2013}}</ref><ref name=Blakeslee>{{cite news|last=Blakeslee|first=Sandra|title=Kentucky Doctors Warn Against a Regional Dish: Squirrels' Brains|url=https://www.nytimes.com/1997/08/29/us/kentucky-doctors-warn-against-a-regional-dish-squirrels-brains.html|access-date=20 April 2012|newspaper=The New York Times|date=August 29, 1997}}</ref><ref name=Jowers>{{cite web|last=Jowers|first=Walter|title=Bad Brains|url=http://www.weeklywire.com/ww/09-22-97/nash_ol-helter_shelter.html|work=Nashville Scene|publisher=DesertNet LLC|access-date=20 April 2012|date=September 22, 1997|archive-date=26 January 2022|archive-url=https://web.archive.org/web/20220126023938/http://www.weeklywire.com/ww/09-22-97/nash_ol-helter_shelter.html|url-status=dead}}</ref> A 2015 case of CJD in a Pittsburgh man who had eaten squirrel brains played out similarly: the media seized on the patient's unconventional food choice, positing squirrel brains as the source of his disease.<ref name="PopMechCJD">{{Cite web|url=https://www.popularmechanics.com/science/health/a23875340/creutzfeldt-jakob-united-states-squirrel-brains/|title = A Man Contracted a Rare, Fatal Disease from Eating Squirrel Brains|date = 17 October 2018}}</ref> The doctor who made the initial report later clarified that he had not meant to assert the squirrel meat was the cause.<ref name="DemChronCJD">{{Cite web|url=https://www.democratandchronicle.com/story/news/2018/10/19/squirrel-brains-infectious-disease-cruetzfeldt-jakob-wasting-hunting-game-meat/1684817002/|title = The story behind the viral story about a man who ate squirrel brains}}</ref> Analysis of the patient's brain tissue ruled out the possibility of CJD acquired from food. As of 2018, Creutzfeldt–Jakob disease had never been identified in squirrels, and the association between squirrel consumption and CJD remained speculative.<ref name="ProMedPrionAppleby">{{Cite web|url=https://promedmail.org/promed-post/?id=6103937|title = Promed Post}}</ref>
== Relationship with trees ==
The biggest source of food for tree squirrels is tree nuts. Red squirrels store nuts in a single stash (a midden) that tends to dry out, so the seeds don't take root. Fox squirrels and gray squirrels bury nuts over a widespread area (scatterhoarding), and often forget them, resulting in new trees (mutualism).<ref> Annaliese Griffin. [https://qz.com/1462091/how-do-squirrels-find-their-nuts-in-the-winter/ "In the autumn, squirrels think about nuts so much that it may make their brains bigger"]. 2018. </ref><ref> Bob Hirshon, interviewing Rob Swihart. [http://sciencenetlinks.com/science-news/science-updates/squirrel-hoarding/ "Squirrel Hoarding"]. viewed 2021. </ref>
== In culture == [[File:AM 738 4to Ratatoskr.png|thumb|upright|Seventeenth-century Icelandic manuscript illustration depiction Ratatoskr, a squirrel in Norse mythology said to live in the world-tree Yggdrasil and to convey insults and gossip<ref name="ThoringtonFerrell2006"/>]] {{Further|List of fictional squirrels}} In the ''Ramayana'', an ancient Sanskrit epic poem, a squirrel assists in constructing a bridge from India to Sri Lanka to help Rama rescue his wife Sita.<ref name="ThoringtonFerrell2006">{{cite book|last1=Thorington|first1=Richard W., Junior|last2=Ferrell|first2=Katie|date=2006|chapter=Chapter 11: Squirrels in Stories and Literature|title=Squirrels: The Animal Answer Guide|chapter-url=https://books.google.com/books?id=-WntqgZjdUgC&q=squirrels+in+Greek+mythology&pg=PA141|location=Baltimore, Maryland|publisher=The Johns Hopkins University Press|isbn=0-8018-8403-9|pages=41–42}}</ref> Rama rewards the squirrel by stroking his back with his three middle fingers, thus giving the Indian palm squirrel the three white stripes that appear on its back.<ref name="ThoringtonFerrell2006"/> In Norse mythology, the squirrel Ratatoskr is a messenger who scurries up and down the trunk of the world-tree Yggdrasil, carrying malicious gossip and insults back and forth between the dragon Níðhöggr, who sits at the bottom of the tree gnawing on its roots, and the hawk Veðrfölnir, who sits at the top of the tree keeping watch.<ref>''Völuspá'' 19, 27, 47; ''Grímnismál'' 29–35, 44; ''Gylfaginning'' 15</ref><ref name="ThoringtonFerrell2006"/><ref name="Sax2001">{{cite book|last=Sax|first=Boria|date=2001|chapter=Beaver, Porcupine, Badger, and Miscellaneous Rodents|title=The Mythical Zoo: An Encyclopedia of Animals in World Myth, Legend, and Literature|chapter-url=https://books.google.com/books?id=Y3Gr7qTarfIC&q=squirrels+in+mythology&pg=PA33|location=Santa Barbara, California, Denver, Colorado, and Oxford, England|publisher=ABC-CLIO|isbn=1-57607-613-X|pages=29–34}}</ref> According to Richard W. Thorington, Jr. and Katie E. Ferrell, this legend may have originated from the red squirrel's habit of giving a "scolding alarm call in response to danger", which some Norsemen may have imagined as insults.<ref name="ThoringtonFerrell2006"/>
In Irish mythology, the goddess Medb is said to always have a bird perched on one shoulder and a squirrel on the other, serving as her messengers to the sky and the earth respectively.<ref name="Sax2001"/> In Europe during the Middle Ages, squirrels were sometimes used in bestiaries as symbols of greed and avarice on account of their storing of nuts,<ref name="Sax2001"/> but, in the nineteenth century, British natural history books often praised them as thrifty for this same reason.<ref name="Sax2001"/> A myth told by the Ainu people of Japan holds that squirrels are the discarded sandals of the ancestral deity Aioina, possibly because squirrels move in spurts like footsteps.<ref name="Sax2001"/> The ''Kalevala'', a Finnish epic poem collected in the nineteenth century but rooted in much older oral tradition, contains references to squirrels, including mention of a white squirrel being born of a virgin.<ref name="ThoringtonFerrell2006"/>
Literary references to squirrels include the works of Beatrix Potter, Brian Jacques' Redwall series (including Jess Squirrel and numerous other squirrels), Pattertwig in C. S. Lewis' ''Prince Caspian'', Michael Tod's Woodstock Saga of novels featuring squirrel communities in the style of ''Watership Down'', and the Starwife and her subjects from Robin Jarvis's Deptford novels. The title character in Miriam Young's 1964 children's book ''Miss Suzy'' is a squirrel.
Anthropomorphic red squirrels were used in British road safety campaigns between the 1950s and 1980s.<ref>[http://www.nationalarchives.gov.uk/films/1964to1979/filmpage_tufty.htm Public Information Films | 1964 to 1979 | Film index | Tufty Under 5’s – Ice Cream Van<!-- Bot generated title -->]</ref>
An episode of the radio program ''This American Life'' called "Squirrel Cop" describes the unintentionally humorous misadventure of a newly hired policeman in trying to remove a frantic squirrel from a homeowner's living room, which results in personal injury and a small fire.<ref name="TAL-Transcript">{{cite web|title=Transcript {{!}} This American Life|url=https://www.thisamericanlife.org/radio-archives/episode/115/transcript|website=www.thisamericanlife.org|date=13 November 1998|access-date=2016-12-19}}</ref> First aired in 1998,<ref name="TAL1998">{{cite web|title=First Day|url=https://www.thisamericanlife.org/radio-archives/episode/115/first-day|website=This American Life|date=13 November 1998|access-date=2016-12-19}}</ref> this episode turned out to be one of the most popular ones of the series,<ref name="TAL2013">{{cite web|title=Fiasco!|url=https://www.thisamericanlife.org/radio-archives/episode/510/fiasco|website=This American Life|date=November 2013|access-date=2016-12-19}}</ref> prompting rebroadcasts and a lead position on the two-CD compilation ''Crimebusters + Crossed Wires: Stories from This American Life''.
==Albino and white squirrels== {{Further|Albinism#In other animals|Leucism}} {{Main article|White squirrel}} One of the ways that squirrels affect human society is inspired by the fascination that people seem to have over local populations of white squirrels (often misidentified as being albino).<ref name="Sainlar">{{cite news|title=Rare recessive gene makes Western's squirrels white|first=Lindsay|last=Sainlar|editor1-first=Andrew|editor1-last=Robinson|url=http://wkuherald.com/life/rare-recessive-gene-makes-western-s-squirrels-white/article_c846f03f-67e5-5ea5-a9c4-04b3bb07c86c.html|newspaper=WKU Herald: Western Kentucky University's student newspaper|publisher=The College Heights herald|location=Bowling Green, Kentucky|oclc=24620823|date=11 September 2003|access-date=31 January 2018}}</ref> This manifests itself by the creation of social group communities that form from a commonly shared interest in these rare animals. Other impacts on human society inspired by white squirrels include the creation of organizations that seek to protect them from human predation, and the use of the white squirrel image as a cultural icon.
Although these squirrels are commonly referred to as "albinos", most of them are likely non-albino squirrels that exhibit a rare white fur coloration known as leucism that is as a result of a recessive gene found within certain eastern gray squirrel (''Sciurus carolinensis'') populations, and so technically they ought to be referred to as ''white'' squirrels, instead of ''albino''.<ref name="Sainlar" /><ref name="Lockett">"Debunking the Albino Squirrel: Lack of white, pink-eyed critters on campus may disprove superstition" by Hudson Lockett, The Daily Texan, May 1, 2009.</ref>
A project run by Untamed Science is seeking to report and document the occurrence of both white squirrels, albinos, and other piebald morphs. Users are encouraged to submit their sightings.<ref name="untamedscience.com">[http://www.untamedscience.com/biodiversity/white-squirrel/ The White and Albino Squirrel Phenomenon + New US Maps!<!-- Bot generated title -->]</ref>
<gallery class="center" mode="packed"> UNTalbinosquirrel.jpg|A true albino squirrel. Note the pink eyes. Albino squirrel Minneapolis 2018.jpg|Albino squirrel head on, showing blue irises Leucistic squirrel in Prospect Park (85580).jpg|A leucistic squirrel. Note the non-pink eyes. </gallery>
===Local pride=== thumb|right|Welcome sign for Kenton, Tennessee, an example of competition for "White Squirrel Capital". Olney, Illinois, known as the "White Squirrel Capital of the World", is home of the world's largest known white squirrel colony. These squirrels have the right of way on all streets in the town, with a $500 fine for hitting one. The Olney Police Department features the image of a white squirrel on its officers' uniform patches.<ref>{{cite web|title=Olney Illinois white squirrel history |work=Olney Illinois visitors information |publisher=City of Olney, Illinois |url=http://www.ci.olney.il.us/Visitors/WhiteSquirrel.htm |access-date=11 February 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100125231330/http://www.ci.olney.il.us/Visitors/WhiteSquirrel.htm |archive-date=January 25, 2010 }}</ref>
Along with Olney, there are four other towns in North America that avidly compete with each other to be the official "Home of the White Squirrel", namely: Marionville, Missouri; Brevard, North Carolina; Exeter, Ontario; and Kenton, Tennessee, each of which holds an annual white squirrel festival, among other things designed to promote their claim of "White Squirrel Capital".<ref>{{cite journal|last1=Kirby|first1=Doug|last2=Smith|first2=Ken|last3=Wilkins|first3=Mike|editor1-first=Doug|editor1-last=Kirby|others=Ken Smith, Susan Kirby|title=White squirrels wars|journal=Roadsideamerica.com: Your Online Guide to Offbeat Tourist Attractions|publisher=Roadside America|location=Middletown, N.J|oclc=40866142|url=http://www.roadsideamerica.com/set/squirrels.html|access-date=11 February 2010}}</ref>
A list of white squirrel sightings around the world is maintained by the White Squirrel Research Institute, a group based in Brevard, North Carolina.<ref>[https://whitesquirrelinstitute.org/ White Squirrel Research Institute Homepage<!-- Bot generated title -->]</ref>
Other towns that have reported white squirrel populations in North America (although not necessarily competing to be the "official" white squirrel capital) include Bowling Green, Kentucky; Columbia, Mississippi;<ref>{{cite web|first=Irvin |last=Priest |url=http://www.missbab.com/index.php?e=102 |title=Columbia |publisher=Missbab.com |access-date=2012-05-06}}</ref> DeForest, Wisconsin;<ref>{{cite news|title=Rare albino squirrel is saved after injury: Sully was found lying on the ground stunned with a bloody nose|first=Gena|last=Kittner|url=http://www.highbeam.com/doc/1G1-207311939.html|archive-url=https://web.archive.org/web/20121103041937/http://www.highbeam.com/doc/1G1-207311939.html|url-status=dead|archive-date=November 3, 2012|newspaper=Wisconsin State Journal|publisher=Lee Enterprises|location=Madison, Wisconsin|issn=0749-405X|oclc=45548250|date=September 5, 2009|page=Local News|access-date=11 February 2010|quote=The squirrel, which Lensing described as pure white with pink eyes, is a rare albino. About 1 in 100,000 squirrels in the state are thought to be albino, said Kristen Anchor, coordinator of Dane County Humane Society.}}</ref> Stratford, Connecticut;<ref>Burgeson, John, "White squirrels return to the area", p A9, August 13, 2010, ''The Advocate'' of Stamford, Connecticut</ref> and some of the snowbelt cities in the Western, Central and Finger Lakes regions of New York State (Buffalo, Rochester, Ithaca and Syracuse).<ref name="untamedscience.com"/> The Trinity Bellwoods<ref>{{cite news|first=Jeff |last=Gray |url=https://www.theglobeandmail.com/news/toronto/the-legend-of-the-white-squirrel/article20182654/ |title=The legend of the white squirrel |newspaper=The Globe and Mail |date=22 August 2014 |publisher=theglobeandmail.com |access-date=2019-10-29}}</ref> neighborhood of Toronto, Ontario is locally known for white squirrel sightings.
===Campus populations=== In addition to the various towns that boast of their white squirrel populations, a number of university campuses in North America have white squirrels. The University of Texas at Austin is home to a white squirrel population which has spurred the myth of the albino squirrel as a good luck charm. There are many versions of the tale; one of the more popular versions is if one spots the albino squirrel before an exam, they will ace it.<ref name="Lockett" /><ref>{{cite web|first=Paul |last=(student) |title=The Lore of the Albino Squirrel |url=http://www.utexas.edu/inside_ut/lconf/2008/10/albino_squirrel/ |access-date=2012-10-24 |url-status=dead |archive-url=https://web.archive.org/web/20131024061548/http://www.utexas.edu/inside_ut/lconf/2008/10/albino_squirrel/ |archive-date=2013-10-24 }}</ref><ref>{{cite web |last1=Cahalan |first1=Rose |title=Forty Acres Field Guide: Fox Squirrel |url=https://alcalde.texasexes.org/2013/06/forty-acres-field-guide-fox-squirrel/ |website=Alcade |date=25 June 2013 |publisher=Texas Exes |access-date=11 November 2019}}</ref> The University of North Texas founded the Albino Squirrel Preservation Society in 2001, which has since acquired several "worldwide" chapters.<ref>{{cite web|title=The Albino Squirrel Preservation Society|url=http://albinosquirrel.com/about.html|website=albinosquirrel.com|access-date=17 May 2017}}</ref> In 2006, the University of North Texas held a student referendum to name their white squirrel as the university's secondary mascot, but the vote was narrowly defeated by the student body.<ref>{{cite journal|title='Baby' is no more|journal=North Texan|publisher=University of North Texas|volume=56|issue=3|date=Fall 2006|url=http://www.unt.edu/northtexan/archives/f06/untnews.htm|access-date=2008-02-07|archive-date=2007-06-26|archive-url=https://web.archive.org/web/20070626034655/http://www.unt.edu/northtexan/archives/f06/untnews.htm|url-status=dead}}</ref> University of Wisconsin - Eau Claire has a significant white squirrel population both on the campus and in other areas of the city of Eau Claire. Michigan Technological University in Houghton, Michigan is home to frequently sighted white squirrels that live on and around the campus.<ref>{{cite news|title=Houghton park among trust projects|first=Garrett|last=Neese|url=http://www.mininggazette.com/page/content.detail/id/504463.html?nav=5006|newspaper=The Daily Mining Gazette|publisher=Ogden Newspapers Inc.|location=Houghton, Michigan|oclc=9940134|date=March 28, 2009|pages=A1 and A10|access-date=10 February 2010|quote="...albino squirrels also frequent the park."}}</ref> A Facebook group dedicated to these squirrels, called ''I've Seen the Albino Squirrel of Michigan Tech'', was created for people to post photographs and anecdotes of their encounters with the white squirrels, and includes some stories from Michigan Tech alumni that recall seeing white squirrels in Houghton dating back to the 1930s.
In Kentucky, the University of Louisville has established its own chapter of the Albino Squirrel Preservation Society, which maintains contact with its members and interested parties through a Facebook group by that name. The university has an open policy to give away a free t-shirt to anyone who takes a photograph of a white squirrel on campus grounds and brings it to the administration offices.<ref>{{cite press release|title=Visit campus|publisher=University of Louisville|url=http://louisville.edu/admissions/visit/|access-date=11 February 2010|quote=If you spot one of the unique albino squirrels on your campus visit and take a photo, you can receive a great prize!}}</ref>
Other university campuses that have albino squirrel populations include Oberlin College in Ohio,<ref>{{cite news|title=Explaining the discreet charm of Oberlin's albino squirrels|first=Milena|last=Evtimova|url=http://www.oberlin.edu/stupub/ocreview/2004/11/12/news/article5.html|newspaper=The Oberlin Review|date=November 12, 2004|access-date=September 18, 2010}}</ref> Ohio State University in Columbus, Ohio,<ref>{{cite news|title=South Oval-kill: Hawk kills campus albino squirrel |first=Sean |last=Minogue |url=http://www.thelantern.com/2.1345/south-oval-kill-1.76692 |newspaper=The Lantern |agency=College Media Network |publisher=Ohio State University |location=Columbus, Ohio |oclc=25004888 |date=2009-06-20 |access-date=11 February 2010 |quote=Since the death of Whitey, a Facebook group titled, "In Memory of Whitey the Albino Squirrel," has been created to commemorate the life and death of the beloved south campus celebrity. |url-status=dead |archive-url=https://web.archive.org/web/20091204073900/http://www.thelantern.com/2.1345/south-oval-kill-1.76692 |archive-date=December 4, 2009 }}</ref> Western Kentucky University in Bowling Green, Kentucky (which has had a population of albino squirrels since the 1960s),<ref name="Sainlar" /> and Youngstown State University in Youngstown, Ohio.{{Citation needed|date=February 2010}}
Michael Stokes, a biology professor at Western Kentucky University, commented that the probable cause for the abundance of white squirrels on university campuses was because they were originally introduced by someone: "We're not sure how they got here, but I'll tell you how it usually happens...When you see them, especially around a college campus or parks, somebody brought them in because they thought it would be neat to have white squirrels around."<ref name="Sainlar" />
Albert Meier, another biology professor at Western Kentucky University, added that: "... white squirrels rarely survive in the wild because they can't easily hide. But on a college campus, they are less likely to be consumed by other animals."<ref name="Sainlar" />
===In folklore=== A story in which a Nāga shapeshifts into a white or albino squirrel, is killed by a hunter, and is magically transformed into meat equal to 8,000 cartloads figures prominently in the folklore of rocket festival traditions and the origin of Nong Han Kumphawapi Lake in Northeast Thailand.<ref>{{cite web|title=กำเนิดหนองหาน |url= https://www.thairath.co.th/content/199010|date=2011-09-04|access-date=2017-10-25|work=Thairath|language=th|author=บาราย}}</ref>
==Red and grey squirrels in the UK== {{See also|Eastern grey squirrels in Europe}} [[File:Red squirrel feeding at sunset.jpg|thumb|right|Red squirrel at a feeding tray in the Lake District, England.]] A decline of the red squirrel and the rise of the eastern gray squirrel, an introduced species from North America, has been widely remarked upon in British popular culture. It is mostly regarded as the invading greys driving out the native red species.<ref>{{cite web|title=The Grey/Red Debate |work=Save our Squirrels |url=http://www.saveoursquirrels.org.uk/red-squirrel-information/the-greyred-debate |publisher=Red Alert North England |access-date=2008-02-07 |archive-url=https://web.archive.org/web/20071214161342/http://www.saveoursquirrels.org.uk/red-squirrel-information/the-greyred-debate |archive-date=2007-12-14 |url-status=dead }}</ref> Evidence also shows that grey squirrels are vectors of the squirrel parapoxvirus for which no vaccine is currently available, and which is deadly to red squirrels but does not seem to affect the non-native host.<ref>{{cite news| author = BBC | title = Virus threatens UK's red squirrels | url=https://news.bbc.co.uk/2/hi/science/nature/2829015.stm| access-date=2008-05-30 | date=2003-03-07 | work=BBC News}}</ref>
Currently,{{when|date=July 2022}} the red squirrel's range has been reduced to the coniferous forests in Scotland, Anglesey in Wales, and in England's Formby, the Lake District, Brownsea Island, and the Isle of Wight.<ref>{{cite web |title=Red squirrels at Plas Newydd |url=https://www.nationaltrust.org.uk/visit/wales/plas-newydd-house-and-garden/red-squirrels-at-plas-newydd |website=National Trust |access-date=23 October 2025}}</ref> The majority of England's red squirrels are found in the county of Northumberland. Special measures are in place to contain and remove any infiltration of grey squirrels into these areas. Though the population has dramatically decreased, they remain listed on the IUCN Red List as Least Concern.{{cn|date=July 2022}}<ref>{{Cite report |url=https://www.iucnredlist.org/species/221730864/221731049 |title=Sciurus vulgaris: Gazzard, A.: The IUCN Red List of Threatened Species 2023: e.T221730864A221731049 |last=IUCN |date=2023-03-29 |publisher=International Union for Conservation of Nature |doi=10.2305/iucn.uk.2023-1.rlts.t221730864a221731049.en |language=en}}</ref>
As of 2008, the eastern gray squirrel was regarded as vermin and it was illegal to release any into the wild; any caught could be released only if one applied for and was granted a licence to do so.<ref name="urlCaptured squirrels live to nibble again | The Times">{{Cite news |last=Malvern |first=Jack |date=2008 |title=Captured squirrels live to nibble again | The Times |work=The Times |url=https://www.thetimes.com/uk/environment/article/captured-squirrels-live-to-nibble-again-9phg32qt580 |access-date=2013-04-08}}</ref> As of 2015, any caught in Scotland had to be humanely killed.<ref name="urlControl of invasive non-native species - Grey Squirrels">{{cite web |url=http://www.gov.scot/Topics/farmingrural/SRDP/RuralPriorities/Options/Controlofinvasivenon-nati/Greysquirrels |title=Control of invasive non-native species - Grey Squirrels |access-date=2013-04-08 |archive-date=2016-04-17 |archive-url=https://web.archive.org/web/20160417234644/http://www.gov.scot/Topics/farmingrural/SRDP/RuralPriorities/Options/Controlofinvasivenon-nati/Greysquirrels |url-status=bot: unknown }}</ref>
==See also== {{Portal|Mammals}}
*American red squirrel *Black squirrel *Eastern gray squirrel *Fox squirrel *Red squirrel *Squirrel *Western gray squirrel *White squirrel
==References== ;Footnotes {{notelist}} ;Sources {{Reflist|30em}}
==Further reading== *{{Cite book |first1=Andrew |last1=Duff |first2=Ann |last2=Lawson |name-list-style=amp | title = Mammals of the World: A checklist | publisher = A & C Black | isbn=0-7136-6021-X | year = 2004 }} *Nowak, Ronald M. 1999. ''Walker's Mammals of the World'', 6th edition. Johns Hopkins University Press, 1936 pp., {{ISBN|0-8018-5789-9}} *Young, Miriam. 1964. ''Miss Suzy'', Purple House Press, {{ISBN|1-930900-28-7}}
==External links== {{commons category|Sciurus}} *[http://thesquirrelloversclub.com/ The Squirrel Lovers Club], an international club of squirrel enthusiasts. *[http://squirrel-rehab.org/ Squirrel-Rehab.org], includes advice and links for helping orphaned baby squirrels.
Category:Squirrels Category:Tree squirrels Category:Rodents by common name