Crested hornero
The crested hornero (Furnarius cristatus) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Argentina, Bolivia, and Paraguay. Taxonomy and systematics The crested hornero is most closely related to the rufous hornero (F. rufus), and they may be sister species. The crested hornero is monotypic. Description The crested hornero is long and weighs . It is a small hornero with the shortest bill of its genus. Its most distinctive feature is its crest, which is also unique among horneros. The sexes' plumages are alike. Adults have a faint pale supercilium and dull brownish malar area and ear coverts; the last have indistinct darker edges. Their forehead is rufescent and their crown and its crest duller clay-brown. Their back and rump are dull tawny-rufous and their uppertail coverts are rufous. Their tail's central pair of feathers are dull rufous and the rest brighter rufous. Their wing coverts and flight feathers are mostly dull tawny-brown with rufous edges on the latter. Their throat is whitish, their breast tawny, and their belly and flanks a deeper tawny with a whitish center to the belly. Their undertail coverts are tawny whitish with rufescent-brown bases. Their