Dark-faced Ground Tyrant

The dark-faced ground tyrant is 15 to 16.5 cm (5.9 to 6.5 in) long. The two subspecies and both sexes have the same plumage, though subspecies M. m. mentalis is significantly smaller than the nominate. Adults have a blackish forehead, lores, and cheeks and a dull chestnut-brown crown. Their upperparts are mostly dark brown to smoky brown with a black lower rump. Their wings are a duskier brown than the upperparts. Their tail is black with whitish edges on the outer webs of the outermost feathers. Their throat and breast are gray and their belly and crissum white. Voice: As of April 2025 xeno-canto had six recordings of dark-faced ground tyrant vocalizations; the Cornell Lab of Ornithology's Macaulay Library had 18 with some overlap between the two. The species' song is "reported as a warbling series of notes". During the flight display males call "a discreet zilip". Its alarm calls include "a series of loud cheep and rapid tu or chee-tú" notes.