Black-billed treehunter

The black-billed treehunter (Thripadectes melanorhynchus) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Colombia, Ecuador, and Peru.

The black-billed treehunter is 20 to 20.5 cm (7.9 to 8.1 in) long and weighs 39 to 46 g (1.4 to 1.6 oz). It is a bulky, dark furnariid with a thrush-like shape. The sexes have the same plumage. Adults of the nominate subspecies have a mostly blackish-brown face with well-defined buff streaks and lores that are grizzled blackish brown and buff. Their crown is blackish brown with narrow buff streaks. Their back is dark brown with buff streaks and their rump dull dark brown that blends to reddish brown uppertail coverts. Their wings are rich dark brown and their tail dark chestnut-brown. Their throat is ochraceous with dark feather borders that give a scaly appearance. Their breast is rufescent-brown with faint pale streaks, their belly a mostly plain duller rufescent brown, and their flanks and undertail coverts darker rufescent-brown. Their iris is brown to dark brown, their bill black, and their legs and feet dark blackish gray to brown. Juveniles have less distinct streaking on the back and throat than adults. Subspecies T. m. striaticeps has a paler (less sooty) crown and back than the nominate, with wider streaks on the back and more rufescent wings.