Crescent-chested Puffbird

The crescent-chested puffbird (Malacoptila striata) is a species of near-passerine bird in the family Bucconidae, the puffbirds, nunlets, and nunbirds. It is endemic to Brazil. == Taxonomy and systematics == The crescent-chested puffbird was for a time called Malacoptila torquata but since the mid-1900s it has borne its current binomial. The South American Classification Committee of the American Ornithological Society (SACC), the International Ornithological Committee (IOC), and the Clements taxonomy treat it as having two subspecies, the nominate M. s. striata and M. s. minor. However, BirdLife International's Handbook of the Birds of the World (HBW) treat those entities as separate species, the greater and lesser crescent-chested puffbirds respectively. == Description == 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…