Which species of bat is considered to be the second smallest in Pennsylvania?

The correct choice is the Pipistrelle bat, which is indeed considered to be one of the smallest species of bats in Pennsylvania, specifically the second smallest. The Pipistrelle bat measures around 8-10 cm in body length, making it a compact and lightweight bat. This species is recognizable by its small size and is often found in a variety of habitats.

Other species mentioned, such as the Big brown bat and the Little brown bat, are generally larger in comparison. The Northern long-eared bat, while also relatively small, does not fall into the same size category as the Pipistrelle bat when ranking the smallest bats in Pennsylvania. Understanding these size classifications is essential for wildlife control operators, as it helps in identifying bat species and managing any nuisance wildlife issues effectively.