Winter Wren Singing
Gram for gram, the Winter Wren has 10 times the crowing power of a rooster. But that doesn't make its song any less complex. This Winter Wren of the eastern United States fits sixteen notes into every second of song. Impressed? Consider the closely related Pacific Wren of the West -- it hits an astounding 36 notes per second! It's too much for the human ear to hear, so we slowed it down to 1/4-speed in What the Pacific Wren Hears.