Greenish Tyrannulet
Phyllomyias virescens
The greenish tyrannulet is 12 to 13.5 cm (4.7 to 5.3 in) long and weighs 10 to 12 g (0.35 to 0.42 oz). The sexes have the same plumage. Adults have a bright olive crown, nape, back, and rump. They have white lores and supercilium, an olive line through the eye, and whitish ear coverts with faint darker speckles. Their wings are dusky with pale yellowish 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. Their throat is whitish and their underparts yellow with faint olive streaks on the breast and sides. Voice: The greenish tyrannulet's song is a "high, sharp, very short, nervous, twittering almost-trill (level, slightly rising or lowering, then rising)". It has been written as "chk-chk-chk-chk-chk-cheee-eeee-eeee-eeee-chu-choo". Another vocalization is a "low, chattered, fast 'piurrr' ".
ID text from Wikipedia, CC BY-SA 4.0
Grey-capped Tyrannulet
Phyllomyias griseocapilla
The grey-capped tyrannulet is about 11 cm (4.3 in) long. The sexes have the same plumage. Adults have a slate-gray crown and nape and bright olive-green back and rump. Their lores and eye area are white with a faint dusky stripe through their eye. Their lower face is pale gray. Their wings are dusky with bright yellow edges on the flight feathers and the ends of the coverts; the latter show as two wing bars. Their tail is dusky olive. Their throat is grayish white, their breast pale gray, their flanks bright yellow-green, and their belly whitish. Voice: The grey-capped tyrannulet's song is a "short series of 1-4 high, clear, whistled 'weew--' notes". Its call is a "high, clear, drawn-out, rising 'weeeew' ".
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Greenish Tyrannulet and Grey-capped Tyrannulet.