A Greater Sac-winged bat (Saccopteryx bilineata) in a hollow tree at Los Cerros
This is a fat S. bilineata. They are always that blackish color. S. leptura is more brownish, with yellowish stripes on the back. They are insect eaters, take special care of those little guys... the solution to dengue reduction.
Photograph by Marty Casado
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