Cinereous Ground Tyrant

The cinereous ground tyrant is 15.5 to 16.5 cm (6.1 to 6.5 in) long. The two subspecies and the sexes have the same shades of gray plumage ("cinereous" means ash-colored). Subspecies M. c. argentinus is slighter larger than the nominate. Adults have a grayish brown crown, dusky lores, and a thin white supercilium to above the eye. Their nape and back are grayish brown. Their wings are a duskier grayish brown with some paler edges on the coverts. Their tail is blackish with thin white edges on the outermost feathers. Their underparts are mostly grayish white with a somewhat whiter belly. Voice: As of April 2025 xeno-canto had only one recording of a cinereous ground tyrant vocalization; the Cornell Lab of Ornithology's Macaulay Library had seven including the xeno-canto one. Its song has not been described; its call is "a soft pip repeated at intervals".