Bechstein's bat Myotis bechsteinii

Typical forest bat with long ears, similar to long-eared bats, but with distinct gap between ears.

characteristics

habitat description	Prefers deciduous forests, but has also been found in coniferous forests. Requires old trees with woodpecker holes or dead wood.
quarters	Nursery roosts in tree cavities, occasionally also bat and bird boxes. Form nursery colony associations and change roosts frequently, so multiple roosts in the immediate spatial vicinity are essential. Males roost alone.
reproduction	Swarms in September to October. Births in June, maternity roosts include 10-50, in associations up to 100 females.
size	- Head-torso length: 45 - 55 mm - Forearm length: 39.0 - 47.1 mm - Wingspan: 25 - 30 cm
weight	7-14 g
color/fur	Grayish to yellowish-brown dorsal fur, underside lighter.
nose shape	Slender snout.
ear shape	Long "rabbit-like" ears, similar to long-eared bats, but with a distinct gap between the bases of the ears.
wing shape	Broad.
flight	"Gleaner" species. Extremely agile, hunts in vegation.
ultrasonic calls	Echolocation calls usually 2.5 - 5 ms long, drop from about 100 kHz to about 35 kHz. Differentiation from other Myotis species is difficult and only possible on the basis of longer sequences and direct comparisons or in combination with visual observations (e.g. swarming at tree hollows).
endangerment	Affected by massive forestry interventions (clear-cutting, habitat tree felling). Red List of Germany (2020): Endangered. IUCN (2016): Near Threatened.

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