# Pond bat

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The **pond bat** (***Myotis dasycneme***) is a species of [vesper bat](/source/Vesper_bat). It is found in Eurasia from [France](/source/France) to [Russia](/source/Russia) and [Kazakhstan](/source/Kazakhstan).

## Physical characteristics

The bat is medium-sized, with a noticeably short tragus for a species in the genus *Myotis*. Fur is thick and black-brown at the base, with brownish or yellowish-grey fur on the dorsal side and white-grey or yellow-grey fur on the ventral side.[citation needed]

## Status

The species is endangered. A large decline in numbers has occurred in the west of its range, especially in the [Netherlands](/source/Netherlands), where many nursery sites have been lost. On a global scale the species is only near threatened, but detailed data from the eastern population is needed to draw reliable conclusions.[1]

## Habitat

In the summer this species nests in lowland regions with areas of water, meadows and woods, with winter roosts also occurring in the foothills of mountains. The record for the altitude of a *M. dasycneme* roost is 1000 meters above sea level, with winter roosts not normally occurring more than 300 meters above sea level. Summer roosts are mostly in roof spaces or church towers, with individuals sometimes found nesting in hollow trees.[citation needed]

## Reproduction

Females reach [sexual maturity](/source/Sexual_maturity) in the second year. The mating season is from the end of August, with nursery roosts then becoming occupied the following may with 40-400 females, although rarely any males. The maximum recorded age is 19 years.[citation needed]

Most summer nursery roosts are in human buildings, typically in areas such as [attics](/source/Attic) and church steeples. Occasionally, pond bats also roost in trees and [nest boxes](/source/Nest_box).[1]

## Hunting

Pond bats hunt over calm or still water, such as [canals](/source/Canal), [rivers](/source/River) and [lakes](/source/Lake), where they feed on insects emerging from the water. Prey is often taken directly from the water's surface.[1]

## Echolocation

Echolocation is done with FM signals between 60 and 24 kHz, with a 5-8 millisecond duration. The call sequence occurs every 115 milliseconds on average, with approximately 8-10 signals per second. Signal range is between 5 and 21 meters.[2]

## References

1. Piraccini, R. (2016). "*Myotis dasycneme*". Vol. 2016. [doi:10.2305/IUCN.UK.2016-2.RLTS.T14127A22055164.en](https://doi.org/10.2305/IUCN.UK.2016-2.RLTS.T14127A22055164.en). Retrieved 16 November 2021.

1. [Myotis dasycneme - Science for Nature Foundation](http://batslife.eu/item/myotis-dasycneme/)

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