Page 23 - Bats of Oklahoma Field Guide

Ozark Big-eared Bat

(Corynorhinus townsendii ingens) Federally Endangered

Subspecies of the Townsend's big-eared bat.

Wingspan: 12 – 13 inches.
Total Length: 3.5 – 4.5 inches. Shea Hammond

Color: Pale brown to nearly black above and paler below.

Over-Wintering Behavior: Hibernates.
Preferred Daytime Roost: Limestone caves and sandstone rubble at
the base of cliffs.
Evening Flight Time: An hour after sunset.

Feeding/Flying Behavior: Has a characteristic “head down” appearance
because its ears extend directly out in front of the head.
Pup Development Period: Late May to late July.

In Hand: The large ears are over 1 inch long. There is a lump on each side of the nose.
Cool Fact: During hibernation, the Western big-eared and Ozark big-eared bats will roll
up their ears.
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