Eurasian Particolored Bat

The parti-coloured bat or rearmouse (Vespertilio murinus) is a species of vesper bat that lives in temperate Eurasia, from Western and Southern Europe, eastwards over the Caucasus and Iran into Mongolia, north-east China, Korea, Afghanistan and northern Pakistan. == Description == Their twittering call, similar to a bird's call, can be heard particularly in the autumn during the mating season. The parti-coloured bat has a body size of 4.8–6.4 centimetres (1.9–2.5 in) with a wingspan of 26–33 cm (10–13 in), and a weight of 11–24 grams (0.39–0.85 oz). Its name is derived from its fur, which has two colours. Its back (dorsal side) is red to dark-brown, with silver-white-frosted hair. The ventral side is white or grey. The ears, wings and face are black or dark brown. The wings are narrow. The ears are short, broad and roundish. It is known to live up to 12 years. == Behaviour == These bats hunt for their prey, for example mosquitoes, caddis flies and moths, with a wide range of ultrasonic sounds, but especially around 25–27 kHz. They hunt after twilight at heights of around 20–40 metres (66–131 ft), for example in open landscape over streams and lakes and above forests or…