What Species of Bats are living in my Attic? This is a popular Question i get when i'm on a Bat Inspection. First things first, there are 9 different species of Bats in Michigan.
Little Brown Bat
Big Brown Bat
Northern Long-eared Bat
The most common Bats your gonna find living in Houses/Buildings are the Little Brown Bat and the Big Brown Bat. The easiest way to tell the difference from the Little Brown Bat and the Big Brown Bat is by looking at there faces. The Little Brown Bat has a short stubby nose and the Big Brown Bat has a longer snout. Also just as the names apply the Little Brown Bat is smaller they range from 2-4 inch's where the Big Brown Bat is Larger ranging from 4-5 inch's fully Mature.( the females can be larger). The Big Brown Bats also tend to have wavy fur on their backs.