Dark-winged Canastero

The dark-winged canastero, or Arequipa canastero, (Asthenes arequipae) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Bolivia, Chile, and Peru. == Taxonomy and systematics == The dark-winged canastero's taxonomy is unsettled. The International Ornithological Committee (IOC) and BirdLife International's Handbook of the Birds of the World (HBW) treat it as a monotypic species, though HBW uses the English name "Arequipa canastero". The South American Classification Committee of the American Ornithological Society and the Clements taxonomy treat it as a subspecies of the rusty-vented canastero (A. dorbignyi), which they call the "creamy-breasted canastero". To further complicate matters, these taxa have plumage, morphological, vocal, behavioral, and nest structure characteristics that may better place them in the thornbird genus Phacellodomus rather than Asthenes. The dark-winged canastero was originally described in the genus Synallaxis. == Description == The dark-winged canastero is 14.5 to 16.5 cm (5.7 to 6.5 in) long and weighs 17.5 to 24 g (0.62 to 0.85 oz). It is a medium-sized canastero. The sexes have the same plumage. Adults have a light gray supercilium and an indistinct brownish line behind the eye in an otherwise dull buff face. Their crown, nape…