White-browed Ground Tyrant

The white-browed ground tyrant (Muscisaxicola albilora) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia, Chile, Ecuador, and Peru, and as a vagrant to Colombia, Uruguay, and the Falkland Islands. == Taxonomy and systematics == The white-browed ground tyrant is monotypic. However, the authors of an early twentieth century publication suggested possibly treating M. juninensis (then the Junin ground-tyrant, now the puna ground tyrant) as a subspecies of it. == Description == 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. Juveniles have a brown crown, dull rufous edges on the wing coverts, and light streaking on the breast and belly. == Distribution…