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MA20-811z Big Brown Bat close-up of first finger on wings [thumb] used to hold onto roost, Eptesicus fuscus
© Dwight Kuhn - All Rights Reserved
Big Brown Bat, Eptesicus fuscus, big brown bats, bat, bats, nocturnal, night animal, vespertilionid, vespertilionids, vesper, insectivore, insectivores, insectivorous, night flying, night flight, carnivore, carnivorous, carnivores, pest control, insect eating, beneficial, brown, fur, mammal, mammals, biosonar, wing, wing membrane, winged, Thumb, first finger
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![MA20-811z Big Brown Bat close-up of first finger on wings [thumb] used to hold onto roost, Eptesicus fuscus](https://www.kuhnphoto.net/img-get/I0000ot903qjVKbg/s/500/400/MA20-811z.jpg)