# Australian shelduck

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Species of bird

Australian shelduck Female Male Conservation status Least Concern (IUCN 3.1)[1] Scientific classification Kingdom: Animalia Phylum: Chordata Class: Aves Order: Anseriformes Family: Anatidae Genus: Tadorna Species: T. tadornoides Binomial name Tadorna tadornoides (Jardine & Selby, 1828) Distribution

The **Australian shelduck** (***Tadorna tadornoides***), also known as the **chestnut-breasted shelduck** or **mountain duck**, is a [shelduck](/source/Shelduck), a group of large [goose](/source/Goose)-like [ducks](/source/Duck) part of the bird family [Anatidae](/source/Anatidae). The genus name *Tadorna* comes from Celtic roots and means "pied waterfowl".[2] They have a striking chestnut-coloured breast and black body. They are protected under the [National Parks and Wildlife Act 1974](/source/National_Parks_and_Wildlife_Act_1974).

## Taxonomy and naming

[William Jardine](/source/William_Jardine_(naturalist)) and [Prideaux John Selby](/source/Prideaux_John_Selby) described the Australian shelduck in 1828.

## Description

The males are mostly dark, with a chestnut breast. They have white neck collars and dark green heads. The females are similar, but they have white around the eyes and are smaller. Both males and females have chestnut and black wings with a green speculum, and show some white on their wings during flight.[3][4]

The downy young are white with a brown crown and brown stripes from crown to tail. Juvenile males are duller than the adults and also lack a white collar, while juvenile females have a lot more white on their excluding their crown.

The vocal calls of the male are a deep honk similar to a goose, while the female's call is a high pitched and penetrating "zeek, zeek".

The size range of the Australian Shelduck is 56–72 centimetres (22–28 in), have a wingspan of 94–132 cm (37–52 in), and weigh between 1.3–1.6 kg (2.9–3.5 lb).[5][6]

Songs and calls Listen to the Australian shelduck on xeno-canto

## Distribution and habitat

The Australian shelduck mainly breeds in southern Australia and [Tasmania](/source/Tasmania) and is still fairly common.[7] In the winter, many birds move farther north than the breeding range. As with other shelducks, this species has favourite [moulting](/source/Moulting) grounds, such as [Lake George, New South Wales](/source/Lake_George_(New_South_Wales)), where sizeable concentrations occur. The Australian shelduck's primary habitat is lakes in fairly open country.

## Behaviour and ecology

Australian Shelducks can be seen in flocks of up to 1000 or more. They are extremely wary of humans and will often call in their presence, but they can get used to people in urban areas. They are upright on land when grazing, and in the water where they sit high. Young birds dive frequently, but adult birds only dive during moulting when they are flightless, or when they are injured or scared.[8]

### Breeding

Australian Shelducks often make their nests in tree holes lined with down, holes in banks, or similar locations.[8] Eight to fifteen eggs are laid, and incubated for between thirty and thirty-three days. After leaving the nesting hollow, the downy and flightless young often aggregate in crèches of 20-40 birds, and even up to 100 birds rarely.[8]

### Food and Feeding

Australian Shelducks feed by grazing, dabbling and filtering. They eat tubers and other plant material, such as saltbush and samphire, along with a range of insects, crustaceans and molluscs.[8]

At Copenhagen Zoo

## References

Wikimedia Commons has media related to [Tadorna tadornoides](https://commons.wikimedia.org/wiki/Category:Tadorna_tadornoides).

[Wikispecies](/source/Wikispecies) has information related to ***[Australian shelduck](https://species.wikimedia.org/wiki/Tadorna_tadornoides)***.

1. **[^](#cite_ref-iucn_status_12_November_2021_1-0)** BirdLife International (2016). ["*Tadorna tadornoides*"](https://www.iucnredlist.org/species/22680011/92838835). *[IUCN Red List of Threatened Species](/source/IUCN_Red_List)*. **2016** e.T22680011A92838835. [doi](/source/Doi_(identifier)):[10.2305/IUCN.UK.2016-3.RLTS.T22680011A92838835.en](https://doi.org/10.2305%2FIUCN.UK.2016-3.RLTS.T22680011A92838835.en). Retrieved 12 November 2021.

1. **[^](#cite_ref-Kear_2-0)** Kear, Janet (2005). [*Ducks, Geese, and Swans*](https://books.google.com/books?id=MfrdBcKd79wC&q=crested+shelduck&pg=RA1-PA439). Oxford University Press. p. 420. [ISBN](/source/ISBN_(identifier)) [0-19-861008-4](https://en.wikipedia.org/wiki/Special:BookSources/0-19-861008-4).

1. **[^](#cite_ref-Wildfowl_2_3-0)** Kightley, Chris (2010). [*Wildfowl*](https://books.google.com/books?id=gFawO8q9VfIC&q=Australian+Shelduck&pg=PA165). A&C Black. p. 165. [ISBN](/source/ISBN_(identifier)) [978-1-4081-3895-3](https://en.wikipedia.org/wiki/Special:BookSources/978-1-4081-3895-3).

1. **[^](#cite_ref-4)** ["Birdlife Australia"](https://www.birdlife.org.au/bird-profile/australian-shelduck).

1. **[^](#cite_ref-5)** ["Australian Shelduck"](https://australian.museum/learn/animals/birds/australian-shelduck/australian.museum/learn/animals/birds/australian-shelduck/). *The Australian Museum*. Retrieved 2023-04-26.

1. **[^](#cite_ref-hanzab_6-0)** Marchant, S.; Higgins, P.G., eds. (1990). ["Australian shelduck"](https://nzbirdsonline.org.nz/sites/all/files/019_Chestnut%20Breasted%20Shelduck.pdf) (PDF). *Handbook of Australian, New Zealand & Antarctic Birds. Volume 1: Ratites to ducks; Part B, Australian pelican to ducks*. Melbourne, Victoria: Oxford University Press. pp. 1202–1210. [ISBN](/source/ISBN_(identifier)) [978-0-19-553068-1](https://en.wikipedia.org/wiki/Special:BookSources/978-0-19-553068-1).

1. **[^](#cite_ref-Wildfowl_7-0)** Ogilvie, Malcolm Alexander; Young, Steve (2002). *Wildfowl of the World*. New Holland Publishers. p. 60. [ISBN](/source/ISBN_(identifier)) [1-84330-328-0](https://en.wikipedia.org/wiki/Special:BookSources/1-84330-328-0).

1. ^ [***a***](#cite_ref-New_Zealand_birds_online_8-0) [***b***](#cite_ref-New_Zealand_birds_online_8-1) [***c***](#cite_ref-New_Zealand_birds_online_8-2) [***d***](#cite_ref-New_Zealand_birds_online_8-3) ["New Zealand birds online"](https://nzbirdsonline.org.nz/species/chestnut-breasted-shelduck).

Taxon identifiers Tadorna tadornoides Wikidata: Q761809 Wikispecies: Tadorna tadornoides ADW: Tardona_tadornoides AFD: Tadorna_(Casarca)_tadornoides Avibase: FF1439E472DBFDC1 BirdLife: 22680011 BirdLife-Australia: australian-shelduck BOLD: 112898 BOW: ausshe1 CoL: 54GHW eBird: ausshe1 EoL: 1047361 EURING: 26670 GBIF: 2498007 iNaturalist: 7070 IRMNG: 10837616 ITIS: 175060 IUCN: 22680011 NBN: NHMSYS0000533555 NCBI: 45638 NZBO: chestnut-breasted-shelduck NZOR: 908ede30-57d9-4986-ae9e-aa8b25a7346b Observation.org: 18651 OBIS: 226001 Open Tree of Life: 282327 Paleobiology Database: 368044 Paleobiology Database: 114653 TSA: 17320 WoRMS: 226001 Xeno-canto: Tadorna-tadornoides Anas tadornoides Wikidata: Q109563078 BHL: 39769816 GBIF: 4850981

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Adapted from the Wikipedia article [Australian shelduck](https://en.wikipedia.org/wiki/Australian_shelduck) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Australian_shelduck?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.