Voice: Single prolonged nasal "whaaa".
Habitat: Lowland moist and wet forests.
Biology: Secretive forest floor species present in high numbers (density of 145/ha); nocturnal; diet mostly of ants; coloration resembles a leaf and its shadow; explosive breeder at onset of rainy season.
Source: Savage, Jay M. 2002. The Amphibians and Reptiles of Costa Rica. The University of Chicago Press, Chicago. 935pp.
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