Eurasian Particolored Bat

The parti-coloured bat is a vesper bat measuring 4.8–6.4cm, with a wingspan of 26–33cm and a weight of 11–24g. Its two-toned fur gives the species its name: the reddish to dark-brown upper hairs have silvery-white tips, while the underside is white or grey. The ears, wings and face are dark. (Wikipedia, general species account)

The species inhabits temperate Eurasia, ranging from western and southern Europe eastward through the Caucasus and parts of Central Asia to Mongolia, northeastern China and Korea. Its twittering vocalizations can resemble a bird's calls and are especially noticeable during the autumn mating season. The opened account did not provide a species-specific diet. (Wikipedia, general species account)