Black-backed Tody-Flycatcher

The black-backed tody-flycatcher (Poecilotriccus pulchellus) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is endemic to Peru. == Taxonomy and systematics == The black-backed tody-flycatcher was originally described in 1874 as Todirostrum puchellum. Following a 1988 publication, taxonomic systems moved puchellum and several other species from Todirostrum to genus Poecilotriccus. By the early twenty-first century genus Poecilotriccus had species called both "tody-tyrant" and "tody-flycatcher" so taxonomic systems began renaming the "tyrants" to "flycatcher". The black-backed tody-flycatcher shares genus Poecilotriccus with 11 other species. The black-backed tody-flycatcher is monotypic. However, during the twentieth century several authors treated it and the golden-winged tody-flycatcher (P. calopterus) as conspecific. == Description == The black-backed tody-flycatcher is about 9.5 cm (3.7 in) long; one male weighed 8.7 g (0.31 oz) and one female 7.2 g (0.25 oz). Adult males have a mostly black head with a white spot behind the eye, a white "moustache", and a white throat. Their back, rump, and uppertail coverts are black. Their wings are black with yellowish white edges on the inner feathers. Their lesser wing coverts are chestnut and the median coverts bright yellow; the former show on the shoulder and the latter show…