Pied Water Tyrant

The pied water tyrant is 12.5 to 13.5 cm (4.9 to 5.3 in) long and weighs 11 to 16 g (0.39 to 0.56 oz). Both sexes have prominent rictal bristles. Adult males are mostly white. They have a black hindcrown and nape, a mottled black and white back, black wings with small white tips on the tertials, and a black tail with small white tips. They have entirely white underparts. Females have brownish mixed with the black on the hindcrown, nape, and back. Both sexes have a dark iris, a sharply hooked black bill, and black legs and feet. Voice: What is thought to be the pied water tyrant's song is "a slightly buzzy choo-wer over and over". Its calls include "a short, nasal dreéeap! a soft pic like a bubble bursting". The dreéeap! call is usually made at dawn or dusk, and the bird sometimes jumps straight up as high as 1 m (3 ft) during it.