Ochre-lored Flatbill
Tolmomyias flaviventris
The ochre-lored flatbill is about 12 to 13 cm (4.7 to 5.1 in) long and weighs 9 to 17.5 g (0.32 to 0.62 oz). The sexes have the same plumage. Adults of the nominate subspecies have a yellowish olive head with a brighter ochre-tinged stripe above the lores and a brighter ochre-tinged eye-ring. Their back, rump, and uppertail coverts are yellowish olive. Their wings are dusky with yellowish edges on the coverts and remiges that appear as two wing bars. Their tail is dusky. Their underparts are bright yellow with an olive to ochre wash on the throat and breast and lightly on the belly. Voice: The ochre-lored flatbill sings "3-5 rather loud, penetrating whistles, sweeEP!....sweeEP!.....sweeEP!, with pauses of 1-several sec between notes". Its call is "a single sweeEP!". It also makes a "mid-high, short fddddddddfit rattle". It usually sings from a well-hidden perch in the forest canopy, and usually around dawn.
ID text from Wikipedia, CC BY-SA 4.0
Yellow-olive Flatbill
Tolmomyias sulphurescens
The yellow-olive flatbill is 12.5 to 14 cm (4.9 to 5.5 in) long and weighs 14.5 to 15.2 g (0.51 to 0.54 oz). The sexes have the same plumage. Adults of the nominate subspecies T. s. sulphurescens have a dark olive crown and nape, a thin white band above the lores, a thin white eye-ring, and pale olive ear coverts with a dusky patch at their rear. Their upperparts are olive-green. Their wings are dusky or blackish with yellowish-olive edges on the wing coverts that form two wing bars. Their remiges have yellowish edges. Their tail is brownish to dusky with buffy edges on the feathers. Voice: The yellow-olive flatbill's song varies widely among the subspecies. That of T. s. cinereiceps is a "series of 4 thin insectlike buzzes, zeee-Zeee-Zeee-ZEEEE!" and its call a "shrill, sibilant tssssp". In western Ecuador T. s. aequatorialis sings "a thin and well-enunciated series of quick notes, 'psee-pset-pset-pset' ". In northern Venezuela T. s. exortivus gives a "buzzy bzz...bzzz...
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: Ochre-lored Flatbill and Yellow-olive Flatbill.