Sclater’s Tyrannulet

Sclater's tyrannulet (Phyllomyias sclateri) is a species of bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia, and Peru. == Taxonomy and systematics == In the early to mid twentieth century some authors placed Sclater's tyrannulet in genus Xanthomyias; that genus was merged into Phyllomyias in the 1970s. The species has two subspecies, the nominate P. s. sclateri (Berlepsch, 1901) and P. s. subtropicalis (Chapman, 1919). The species' common name and specific epithet commemorate the British zoologist Philip Lutley Sclater. == Description == Sclater's tyrannulet is 11.5 to 12.5 cm (4.5 to 4.9 in) long. The sexes have the same plumage. Adults of the nominate subspecies have a dull olive-green crown, nape, back, and rump with a grayish tinge on the crown. They have whitish lores and narrow supercilium. Their wings are dusky with pale yellow to whitish edges on the flight feathers and the ends of the coverts; the last show as two bars on the closed wing. Their tail is dusky olive. Their throat is grayish white and their lower face grizzled whitish. Their breast is pale gray that becomes pale yellowish on their flanks and belly. Subspecies P. s. subtropicalis…