Brandt's bat
Brandt's bat ( Myotis brandtii )
The Brandt's bat or Brandt 's bat ( Myotis brandtii, also Myotis brandti ) is a bat species from the genus mouse ears, which was described in 1845 by the German biologist Eduard Friedrich Eversmann from the first time. The scientific epithet brandtii honors the German zoologist Johann Friedrich von Brandt ( 1802-1879 ).
Features
The Brandt's bat is a rather small species of bat. Your head-body length is only about four to five inches, the wingspan is 19-20 centimeters, the forearm length 32-39 mm. An adult Brandt's bat weighs 4-10 grams.
The rather long fur has dark brown hair approaches, at the top it is golden brown. The belly is gray, sometimes with a yellowish tint. The ears are moderately long, the tragus is narrow, pointed, about half as long as the ear. Ears, nose and wing membranes are pale brown, the base of the inner ear and tragus generally brighter. The penis is thickened in contrast to the whiskered bat is not uniform but narrow in the middle.
Dissemination
Since the Brandt's bat was previously treated with the whiskered bat as a species, the spread is not yet thoroughly explored. The animals live in any case in England, Germany, the Benelux countries, southern Scandinavia, Poland, the Czech Republic, Slovakia, Hungary, Romania, the Baltic States, Austria, Switzerland, Eastern France and Russia.
Habitat and behavior
The Brandt's bat is strongly tied to forests and often in water. She lives in mixed forest, deciduous forest and sometimes in coniferous forest. In the vicinity of human settlements, it is rare to be found as the whiskered bat. In the summer she sleeps mostly in tree cavities, but also in buildings and nest boxes in winter in caves, tunnels, mines and cellars. Northern populations hibernate.
Brandt's bats are crepuscular. In flight, fast and agile, they hunt at low altitude in the vicinity of water small, non-aquatic insects. In case of danger they chirp in high tones, the amplitude maximum is at 40-50 kHz.
Similar type
- Whiskered bat (Myotis mystacinus )