Hibernation

Big brown bat (Eptesicus fuscus)

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Big brown bat (Eptesicus fuscus)

A big brown bat (Eptesicus fuscus) hibernating in a Tennessee cave.

1972 January 1972 Merlin Tuttle's Bat Conservation North America Pearson Cave Science Source SmugMug Tennessee U.S.Vespertilionidae bat bat conservation big brown bat Eptesicus fuscus cute hibernating hibernation mammal photography wildlife photography