What is the largest bat species in Pennsylvania?

The hoary bat is indeed the largest bat species found in Pennsylvania. This species can be distinguished by its impressive wingspan, which can measure up to 16 inches, and its distinctive fur, which is a mix of brown and white, giving it a frosted appearance. The hoary bat is known for its migratory behavior, often traveling long distances between summer and winter habitats, which adds to its significance in the state's ecosystem.

In contrast, the other species listed are smaller in size. The big brown bat, while larger than some other common bats, does not reach the size of the hoary bat. The little brown bat is one of the smallest bat species in the region, and the Indiana bat is also comparatively smaller and endangered, which impacts its population and distribution. Therefore, the hoary bat stands out as the largest species in Pennsylvania, demonstrating the diversity of bat species and their adaptations within the state.