Dark-breasted Spinetail

The dark-breasted spinetail (Synallaxis albigularis) 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 dark-breasted spinetail was previously considered to be conspecific with the pale-breasted spinetail (S. albescens) and some authors treat them as sister species. The dark-breasted spinetail has two subspecies, the nominate S. a. albigularis (Sclater, PL, 1858) and S. a. rodolphei (Bond, J, 1956). A subpopulation within the nominate may be a third subspecies. == Description == The dark-breasted spinetail is 15 to 16 cm (5.9 to 6.3 in) long and weighs 14 to 18 g (0.49 to 0.63 oz). The sexes have the same plumage. Adults of the nominate subspecies have a brownish gray face and forecrown. Their hindcrown and nape are dark rufous, and their back, rump and uppertail coverts olive-brown. Their wing coverts are dark rufous with paler edges and their flight feathers dark brownish. Their tail is dull brown; it is graduated and the feathers have pointed tips. Their throat is grayish white with sooty flecks; the lower throat feathers are blackish with pale gray edges. Their breast and sides are brownish…