In downed oak tree
Photographed looking up into a bat box. Pictures 2 and 3 are closer images of each half of the box respectively. Photographs were made within a 15-20 minute period and some individual bats changed positions within that time frame.
Several species of bats roosting in the soffit.
Identified by interpreting the spectrogram recorded using the wildlife acoustics bat detector.
The big brown bat (Eptesicus fuscus) is native to North America, Central America, the Caribbean, and extreme northern South America.