From the Pennsylvania Bat Conservation and Rehabilitation:

Epic floof on this snow day. This sweet hoary girl is receiving care for an infection. She is just one of many bats receiving dedicated care for various injuries. Migratory foliage bats like this girl are often victims of window strike.

Window collisions can lead to infection in bats mainly through trauma, stress, and secondary exposure to pathogens. Bats are especially vulnerable because their wing membranes are thin, highly vascular, and easily damaged.

Our specialized team of dedicated volunteers and rehabilitators are essential for treating bats injured in window collisions because bats are physiologically unique, highly sensitive to stress, and medically complex compared to most other wildlife species.

We have developed a specialized protocol for treating bats injured in window collisions, ensuring that every patient receives the highest standard of care throughout their recovery.

This floof is one of those bats. The injury and infection are present at the base of her thumb.

Wouldn’t an echolocating bat be able to tell that a window was a solid barrier and avoid it?

Yeah… I thought she need glasses too.