Crescent-chested Puffbird

The crescent-chested puffbird is 17.5 to 20 cm (6.9 to 7.9 in) long. The nominate M. s. striata weighs from about 40 to 47 g (1.4 to 1.7 oz); M. s. minor is smaller. The nominate's head and upperparts are blackish with buffy streaks. The face is rufous around the bill and has a buffy or white "moustache". The wing is brown with buffy markings; the tail is plain dark brown. The upper breast has a white crescent with a black band below it. The lower breast is rufous, the center of the belly whitish, and the sides of the breast and belly dull brown with buffy scallops. M. s. Voice: The crescent-chested puffbird's song is "a high-pitched whistle of 10+ notes, like a small tyrannid, bieh, bieh, bieh…." Its alarm call is "a high, thin, descending seeee...".