Bats in New Mexico

Western Red Bat WESTERN RED BAT - Lasiurus blossevillii

Weight: 10-15 grams

Wingspan: 29-30 centimeters

Distribution: Western Canada, western United States, western Mexico and Central America.

Ecology and Behavior: The western red bat occurs in streamside habitats dominated by cottonwoods, oaks, sycamores, and walnuts, and is rarely found in desert habitats. In Mexico, it occurs in streamside, dry thorn scrub, and pine-oak forests. This species is believed to be migratory in much of the Southwest, and has been reported there only during summer months. There are various accounts of its presence during winter and summer in California. For example, the western red bat is resident through winter (September to May) in the vicinity of San Francisco, but absent in summer, and about 100 kilometers (60 miles) to the northeast it is absent in winter, but appears in February or March. Western red bats roost in tree foliage as do other members of this genus.

Food Habits: The western red bat consumes moths and other insects.

Reproduction: Few data on reproductive biology are available. In mid-May to late June, up to three babies may be born.

Status of Populations: Common.

Thanks to T. L. Best, J. S. Altenbach, and M. J. Harvey for permission to reprint portions of Bats of the Western United States, 1998.

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