A day late but happy international bat day! A small early cluster of Gray Bats in a recent cave. Gray Bats are endangered as they have very specific needs and roost together in the tens of thousands or more. This means they are reliant on just a couple of very specific caves, and also susceptible to disease because of the tight clustering in large numbers. Luckily, they have been generally resistant to the fungus that causes White Nose Syndrome. (Photographed with permission, using low light, during a period when they are not hibernating or nursing young) #bat #bats #nature #cave #caves #caving #biology #BatAppreciationDay #Baturday