White-bellied Spinetail

The white-bellied spinetail (Mazaria propinqua) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, and Peru. == Taxonomy and systematics == The white-bellied spinetail was originally described in genus Synallaxis. Much later, molecular phylogenetic studies found that it is not closely related to the other members of the genus and it was moved to its own genus Mazaria. It and the chotoy spinetail (Schoeniophylax phryganophilus) are sister species. The white-bellied spinetail is monotypic: No subspecies are recognized. == Description == The white-bellied spinetail is 14.5 to 16 cm (5.7 to 6.3 in) long and weighs 16 to 22 g (0.56 to 0.78 oz). The sexes have the same plumage. Adults have gray lores on an otherwise grayish brown face. Their crown, back, rump, and uppertail coverts are also grayish brown. Their flight feathers are mostly dusky with pale rufous edges on the primaries. Their tail is dull rufous; the feathers are pointed. Their chin and upper throat are white or black with white fringes on the feathers. Their lower throat is black with white on the feather tips. Their breast is gray or pale brownish…