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Roosting Habits of Pipistrellus hesperus

Stephen P. Cross
Journal of Mammalogy
Vol. 46, No. 2 (May, 1965), pp. 270-279
DOI: 10.2307/1377847
Stable URL: http://www.jstor.org/stable/1377847
Page Count: 10
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Roosting Habits of Pipistrellus hesperus
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Abstract

This study strongly supports the widely held view that Pipistrellus hesperus roosts primarily in cracks and crevices of rocks. More than 70 individual roosts were found by watching bats as they returned to large cliffs at daybreak. Some individuals approach and enter without hesitation; others exhibit a searching behavior before entering. Banding studies revealed little loyalty of a bat to a particular crevice, but many of the bats remain in a general roost area. One maternity colony was found. Available evidence suggests that this species often roosts at night on rocky cliff faces.

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