Chestnut-winged Hookbill

The chestnut-winged hookbill (Ancistrops strigilatus) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Bolivia, Brazil, Colombia, Ecuador, and Peru. == Taxonomy and systematics == The chestnut-winged hookbill is the only member of its genus. Beyond that its taxonomy is unsettled. The International Ornithological Committee and BirdLife International's Handbook of the Birds of the World treat it as monotypic. The Clements taxonomy assigns it two subspecies, the nominate A. s. strigilatus (Spix, 1825) and A. s. cognitus (Griscom & Greenway Jr, 1937). Within the ovenbird family, the chestnut-winged hookbill is most closely related to the foliage-gleaners of genus Dendroma. This article follows the monotypic model. == Description == The chestnut-winged hookbill is 17 to 19 cm (6.7 to 7.5 in) long and weighs 30 to 39 g (1.1 to 1.4 oz). It is a largish furnariid with distinctive plumage, and a moderately hooked bill resembling those of Thamnophilus antshrikes. The sexes have the same plumage. Adults have a wide whitish to buff supercilium, grizzled brownish and buff lores, brown ear coverts with pale streaks, and yellowish buff malars. Their crown is very dark brown with obvious narrow gold-buff streaks. Their back…