Buff-bellied Puffbird

The buff-bellied puffbird (Notharchus swainsoni) is a species of bird in the family Bucconidae, the puffbirds, nunlets, and nunbirds. It is found in Argentina, Brazil, and Paraguay. == Taxonomy and systematics == During the second half of the twentieth century, the buff-bellied puffbird and what are now the white-necked puffbird (N. hyperrhynchus) and Guianan puffbird (N. macrorhynchus) were treated as conspecific. It is now treated as its own monotypic species. == Description == The buff-bellied puffbird is about 23.5 cm (9.3 in) long and weighs 72 to 75.6 g (2.5 to 2.7 oz). The crown and upperparts are black with a green gloss and buffy edges to the feathers. It has a narrow white forehead, throat, and upper breast. The sides of the face and a thin band around the nape are grayish white. A wide black band separates the upper breast from the buffy to pale rufous belly. The flanks are gray. Its eye color can be straw, brown, or red. == Distribution and habitat == The buff-bellied puffbird is found in eastern Paraguay, far northeastern Argentina's Misiones Province, and in southeastern Brazil from southern Bahia and Espírito Santo south to Santa Catarina. It is resident in Argentina but…