Gray Myotis (Gray Bat)
The gray bat is the largest of all Missouri’s myotis (mouse-eared) bats, which include the little brown myotis, the Indiana myotis, and the northern long-eared myotis. Gray bats are hard to distinguish from their myotis cousins. Gray myotises have grayer fur; it is a uniform brownish gray most of the year, turning a light rusty brown in summer. Other myotises have bi- or tricolored fur, with the tips of each strand contrasting with the base. The gray myotis’s ears and wing membranes are gray to black. Its key identifying feature is wings that attach to the ankle and not at the base of the toes. The gray bat also has a distinct notch on the inside curve of each claw.