The Daubenton’s bat is the average-sized of the smaller bats. The fluffy fur of the bat is brownish gray on the back and silverfish gray on the under parts. The young are darker than the adults. These bats are reddish pink in the face and nose, with bare skin encircling their eyes. When the bat is agitated, its rather short ears straighten up perpendicularly. The wings and tail webbing are dark brown.
The Daubenton’s bat is commonly 45-55 mm long, with the average wingspan of 240-275 mm. Its weight is somewhere between 7 and 15 grams.
The bat can live up to 22 years.
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