Rufous-crowned Greenlet

The rufous-crowned greenlet (Hylophilus poicilotis) is a species of bird in the family Vireonidae, the vireos, greenlets, and shrike-babblers . It is found in Argentina, Brazil, Paraguay, and possibly Bolivia. == Taxonomy and systematics == The rufous-crowned greenlet is monotypic. However, for much of the twentieth century what is now the grey-eyed greenlet (Hylophilus amaurocephalus) was treated as a subspecies of it. By the 1990s they were generally recognized as separate species. == Description == The rufous-crowned greenlet is about 12.5 cm (4.9 in) long and weighs 9 to 12 g (0.32 to 0.42 oz). The sexes have the same plumage. Adults have a bright chestnut-brown forehead and crown and mottled grayish black ear coverts. Their nape, upper back, and shoulders are olive-green and their lower back and rump are a brighter green. Their wings are dull grayish black with thin greenish edges on the outer webs of the primaries and secondaries and yellow-green edges on the inner webs of the tertials. Their tail is grayish green with brighter greenish edges on the feathers' outer webs. Their throat is dull pale gray, their upper breast yellowish gray, their lower breast dull yellow, their flanks and belly a brighter yellow, and…