Tawny frogmouths have enormous wide frog-like mouths, which they use to capture insects. They have large, horny, triangular, sharply hooked bills. Their legs are very short and their feet small and weak. They are somewhat lethargic in their movements, and are the weakest fliers in the order. Their rounded wings are only of moderate length.
- During the day frogmouths sleep perched lengthwise on a branch with their heads up and their eyes closed.
- The Tawny frogmouth’s call is a grunting “oom-oom-oom” which has a distinct nasal quality. It is repeated through the night.