Bats are the only mammals that can truly fly. Among the 40 species of bats found north of Mexico, only a few cause problems for humans. Nine of these species reside in Pennsylvania.
Most hibernate during winter, but big and little brown bats do not. When fat reserves and food sources are low, bats can lower their heart rate from 200 to 10 beats per minute, putting them into a state of torpor. Bats can remain in torpor anywhere from a few days to a few months.
Brown bats roost in chimneys, barn rafters, behind siding, and attics. Their roosting location is usually near their food source, insects. A bat can eat thousands of insects in one night, and some say over 1,200 an hour.
Not only do bats control the bug population, but they are also pollinators, like bees. Many plants depend on bats for pollination, including bananas and mangos. They are a huge benefit to the ecosystem. Who knew something so small could be such a significant asset?
Bat guano has many uses and is one of the best natural fertilizers due to its high concentrations of potassium and nitrates. Bat guano is a weakness, too, because it contains uric acid and can cause permanent staining and deterioration of wood and some metals. It can also grow mold spores that, when inhaled by humans, may cause respiratory issues.
Removing bats can only be done outside of maternity season. Between October and April, bats give birth and teach their babies how to fly and survive. They must be able to do these two things before you can get rid of bats. All bats are protected due to reductions in populations. Diseases like the white-nose syndrome and accidents with wind turbines cause bat species to be endangered.