Plain-crested Elaenia

The plain-crested elaenia is 12.5 to 15 cm (4.9 to 5.9 in) long and weighs about 18 g (0.63 oz). It is a small elaenia with a conspicuous crest. The two subspecies and the sexes have essentially the same plumage. Adults have a dull olive-brown head with lighter brown cheeks and a thin whitish eyering. Their upperparts are dull olive-brown. Their wings are mostly dusky; the flight feathers have whitish edges and the tips of the coverts are whitish. The latter show as two bars on the closed wing. Their tail is dusky. Voice: The plain-crested elaenia's song is a "raspy 'zree-zree-zuzu' or 'zreeeh dudu' and variations thereof". Its calls include a "soft melodious 'wee' ", a "short rattle as 'wee'he'he'he'he' ", a "low 'wheesp' or 'wheeb' ", and a "rising and then falling 'dsooty-ééo' ".