Yellow-crowned Elaenia

The yellow-crowned elaenia (Myiopagis flavivertex) is a species of bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela. == Taxonomy and systematics == The yellow-crowned elaenia was originally described as Elaenia flavivertex. It was moved to genus Myiopagis in the mid twentieth century and later confirmed by genetic analysis to belong there. The yellow-crowned elaenia is monotypic. == Description == The yellow-crowned elaenia is 12.5 to 13 cm (4.9 to 5.1 in) long and weighs about 12 g (0.42 oz). The sexes have the same plumage. Adults have a dark brownish olive crown with a large but partially concealed bright yellow stripe along its middle. They have an indistinct whitish loral spot and supercilium; their lower face is grayish olive. Their upperparts are olive. Their wings are dusky olive with bright yellow edges on the inner flight feathers and tips on the coverts; the last form two bars on the closed wing. Their tail is olive. Their throat is whitish, their breast yellow with an olive wash, and their belly bright yellow. Both sexes have a dark brown iris, a short black bill with a…