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Townsend’s Big-eared Bat

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Townsend’s Big-eared Bat

Corynorhinus townsendii Townsend’s bat is recognizable by its enormous ears and glandular bulbs between the eyes and nostrils. Like most bats, the big-eared bat has a low reproductive rate, the female giving birth to a single young annually that nurses for about six to eight weeks. The low reproductive rate is a handicap in recovering from habitat disturbance. The Townsend’s bat occupies special roost sites for resting, raising young, and hibernation. These structures offer stable humidity and temperature, so disturbance of roost and den sites can disrupt the behavior and productivity of the bats. Photo by Ann Froschauer/USFWS