Black-backed Tody-Flycatcher

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 as a wing bar. Their shortish tail is black. Their breast and belly are bright yellow. Voice: The black-backed tody-flycatcher's song is "a rapid series of descending, rich, sputtered churrs: djerr djeer djeer djeer… or bisyllabic we'djerr we'djerr we'djerr…." The singer usually flashes its wings while singing, and often pairs sing in duet.