White-browed Ground Tyrant

The white-browed ground tyrant is 15 to 17.5 cm (5.9 to 6.9 in) long and weighs about 25 to 29 g (0.88 to 1.0 oz). The sexes have the same plumage. Adults have a tawny forecrown, a rufous hindcrown, and a long thin white supercilium. Their upperparts are brownish gray. Their wings are dusky gray. Their tail is black with whitish edges on the outer webs of the outermost feathers. Their throat, breast, and belly are pale gray and their crissum whitish. They have a dark brown iris, a long dusky bill, and dusky legs and feet. Voice: The white-browed ground tyrant appears to be more vocal than other ground tyrants. The most common vocalization (or most commonly recorded) is "a high-pitched...short, slightly rising tset or tseek, with some variation". During the courtship flight males make a "clet ip" call. What appears to be the species' alarm call is a "high-pitched, short and abrupt tsip".