Ashy-headed Greenlet
Hylophilus pectoralis
The ashy-headed greenlet is 12 cm (4.7 in) long and weighs 10.3 to 12.4 g (0.36 to 0.44 oz). The sexes have the same plumage. Adults have a dull gray forehead, crown, and nape. They have a dull grayish white supercilium and grayish ear coverts. Their upperparts are dull greenish. Their wings and tail are dull greenish with brighter greenish edges on the feathers. Their chin is off-white, their throat mottled grayish white, their breast greenish yellow, their flanks grayish, and their belly dull white. Voice: The ashy-headed greenlet's song is a "high, hurried Wéeje-Wéeje-Wéeje-, rapid tutjeweé-tutjeweé-tutjeweé-, loud, sharp WúTjirrrr".
ID text from Wikipedia, CC BY-SA 4.0
Olivaceous Greenlet
Hylophilus olivaceus
The olivaceeous greenlet is 12 cm (4.7 in) long and weighs 11 to 13 g (0.39 to 0.46 oz). The sexes have the same plumage. Adults have a yellowish olive forehead. The rest of the top of their head and their upperparts, wings, and tail are dull olive-green. Their underparts are yellowish olive that is slightly lighter on the chin and a slightly brighter yellow on the belly. They have a whitish iris, a dull pink or brownish pink bill, and brownish pink legs and feet. Voice: The olivaceous greenlet's song has been described as a "distinctive and loud...series of up to 10-12 musical suwee or peer notes". Another description is "a single note repeated in a series, for example: wee wee wee wee wee wee wee".
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: Ashy-headed Greenlet and Olivaceous Greenlet.