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Bats flying in the winter? Or, find a dead bat? Please report. Here's why.

Bat with White Nose Syndrome. Photo by Marvin Moriarty.

Bats are an essential part of the global ecosystem. They save agriculture a great deal of money by eating vast numbers of crop-destroying insects such as Colorado Potato Beetles, and they save humans a lot of itching by eating vast numbers of flying, biting insects such as mosquitoes. For years, bats had an undeserved bad reputation, but gradually we are learning to understand their huge value.