Description wikipedia

The white-crested elaenia (Elaenia albiceps) is a species of bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Bolivia, Chile, Colombia, Ecuador, and Peru. The white-crested elaenia is 13.5 to 15 cm (5.3 to 5.9 in) long and weighs 12.5 to 24.2 g (0.44 to 0.85 oz). It is a small to medium size elaenia with a small bushy crest. The sexes have the same plumage. Adults of the nominate subspecies E. a. albiceps have a mostly dull olive to olive-gray head with a partially hidden white or creamy white stripe in the middle of the crest. They have whitish lores and eyering. Their upperparts are dull olive to olive-gray. Their wings are dusky with white or whitish tips on the coverts that show as two wing bars. Their flight feathers have narrow whitish or yellowish edges with dusky bases on the inner pairs. Their tail is dusky with narrow olive edges to the feathers. Their throat is light gray or whitish gray, their breast light gray or grayish brown, and their belly and undertail coverts whitish.