Brown Bats In Attic

Males typically roost individually but female brown bats of both sizes form colonies in attics or barns when they are preparing to give birth.

Brown bats in attic.

Big brown bats eptesicus fuscus can grow to be twice the size of little brown bats. They have about a 4 body length from nose to tail and longer bat fur that s less uniform than the little brown bat. Flight at dusk and dawn. Little brown bats are known for migrating back and forth between attics where they spend spring and summer and caves where they hibernate for winter.

Bats can squeeze into tiny cracks so if you see brown staining around even the smallest crevice odds are it is the entry point a colony of bats has claimed as their key to free rental space. The guano for the little brown bat measures only about 0 3cm on average. They can also live long lives hopefully not as freeloaders in your space of up to 20 years. Little brown bats myotis lucifugus have a wingspan of approximately 8 inches and weigh less than half an ounce.

Little brown bats will hibernate during the winter months in a cool dark secluded place like an abandoned mine cave or attic. Check for dark brown stains around your roofline dormers vents and roof trim. These bats are the speed demons of the bat world achieving flights speeds of 40 miles per hour. These bats prefer insects with aquatic life stages so roosts will often be found near water.

There are two species of bat that can infest your residence little brown bats and big brown bats. They adapt well to a variety of. The big brown bat is just the larger counterpart to the little brown bat.