Grey-bellied Spinetail

The grey-bellied spinetail (Synallaxis cinerascens) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Argentina, Brazil, Paraguay, and Uruguay. == Taxonomy and systematics == The grey-bellied spinetail is monotypic. It and the ochre-cheeked spinetail (S. scutata) are sister species. == Description == The grey-bellied spinetail is 13.5 to 15 cm (5.3 to 5.9 in) long and weighs 10 to 14 g (0.35 to 0.49 oz). The sexes have the same plumage. Adults have blackish lores and a faint gray line behind the eye on an otherwise gray-brown face. Their forehead is dark grayish brown, their crown dark brownish olive, and their back, rump, and uppertail coverts are richer brown. Their wings are mostly rich reddish chestnut. Their tail is dark chestnut; the tips of the feathers have no barbs giving a spiny appearance. Their chin is whitish, their upper throat mottled black and pale gray, and their lower throat black. Their underparts are mostly brownish gray with a paler and grayer center to the belly and browner flanks and undertail coverts. Their iris is reddish brown, their bill black (sometimes with a gray base to the mandible), and their legs and…