Southern Bristle Tyrant

The southern bristle tyrant (Pogonotriccus eximius) is a Least Concern species of passerine bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Brazil, and Paraguay. == Taxonomy and systematics == The southern bristle tyrant was originally described as Pogonotriccus eximius. The genus Pogonotriccus was later merged into genus Phylloscartes. Beginning in 2016 taxonomic systems resurrected Pogonotriccus for this species and a few others. The southern bristle tyrant is monotypic. == Description == The southern bristle tyrant measures about 11 to 11.5 cm (4.3 to 4.5 in) in length; one male weighed 7.5 g (0.26 oz). Both sexes share the same plumage. Adults feature a gray crown and nape with an olive tint in the middle of the crown. A wide white streak at the lores narrows and becomes grayer over and past the eye to the nape. Their ear coverts are yellow bisected by a wide black crescent. Their back, rump, and tail are bright olive. Their wings are dusky with yellowish olive edges on the flight feathers and wing coverts. Their chin, throat, and underparts are bright yellow with a light olive wash on the breast. Both sexes have a dark brown or dull red…