Description wikipedia

The Araguaia spinetail (Synallaxis simoni) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is endemic to Brazil. == Taxonomy and systematics == The Araguaia spinetail has at times been treated as a subspecies of the white-lored spinetail (S. albilora), and both have also been treated as subspecies of the plain-crowned spinetail (S. gujanensis). Starting in 2016 with BirdLife International, taxonomists accepted it as a species in its own right. The International Ornithological Committee and the Clements taxonomy made the change in 2023. However, the South American Classification Committee of the American Ornithological Society has not done so. The Araguaia spinetail is monotypic. == Description == The Araguaia spinetail is 15 to 16 cm (5.9 to 6.3 in) long. The sexes have the same plumage. Adults have dull whitish lores on an otherwise brownish gray face. Their crown is grayish brown, their mantle, back, and rump bright rufous, and their uppertail coverts dark rufous. Their wings are bright rufous with fuscous-brown tips on the flight feathers. Their tail is dark rufous; it is graduated and the feathers have blunt tips. Their throat is white; their underparts are mostly tan with a whitish center on a paler belly. Their iris is cinnamon brown, their maxilla black to dark gray, their mandible gray, and their legs and feet gray to dull brownish.