Brown Bats In Attic

There are two species of bat that can infest your residence little brown bats and big brown bats.

Brown bats in attic. Big brown bats eptesicus fuscus can grow to be twice the size of little brown bats. Little brown bats myotis lucifugus have a wingspan of approximately 8 inches and weigh less than half an ounce. Big brown bats may check out your attic or walls and decide your home or building is a perfect place to hibernate or rest. These bats prefer insects with aquatic life stages so roosts will often be found near water.

They have about a 4 body length from nose to tail and longer bat fur that s less uniform than the little brown bat. Check for dark brown stains around your roofline dormers vents and roof trim. Bats depending on the species tend to reside either in your attic or in your walls. They adapt well to a variety of.

They can also live long lives hopefully not as freeloaders in your space of up to 20 years. The guano for the little brown bat measures only about 0 3cm on average. 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. The big brown bat is just the larger counterpart to the little brown bat.

How to identify the big brown bat. Flight at dusk and dawn. Males typically roost individually but female brown bats of both sizes form colonies in attics or barns when they are preparing to give birth.