Golden-bellied Flycatcher
Myiodynastes hemichrysus
The golden-bellied flycatcher is 20 to 22 cm (7.9 to 8.7 in) long and weighs about 39 to 42.5 g (1.4 to 1.5 oz). The sexes have the same plumage. Adults of the nominate subspecies M. h. hemichrysus have a thinly black-streaked, dusky grayish olive or dark sooty gray, crown and nape with a large, usually hidden, yellow patch in the center of the crown. They have a wide white supercilium, a wide blackish stripe through the lores and ear coverts, and a grayish olive or dusky cheek with a whitish stripe through it. Voice: The few studies to date have revealed little difference among the vocalizations of the three golden-bellied flycatcher subspecies. The species' dawn song is a "repeated simple phrase kwee!-tee-tu, also transcribed as tree-le-loo, squeeE-yu-drr or PSEE-chirr-rr". Its day song is a "repeated loud strident skeeew! or skeeeuu!".
ID text from Wikipedia, CC BY-SA 4.0

Golden-crowned Flycatcher
Myiodynastes chrysocephalus
The golden-crowned flycatcher is 18.5 to 22 cm (7.3 to 8.7 in) long and weighs about 37 to 40 g (1.3 to 1.4 oz). The sexes have the same plumage. Adults have a brownish gray to dusky crown with a usually hidden golden-yellow patch in the center. They have a long white supercilium on an otherwise mostly grayish dusky face. Their upperparts are mostly dull olive with a greenish olive rump and uppertail coverts; the last have cinnamon or buffy edges at their tips. Their wings are dusky with thin rufous to tawny-buff edges on the coverts and flight feathers. Voice: The golden-crowned flycatcher's dawn song is "a loud, squeaky REE'chewee?" and its call a "metallic, slightly squeaky rew-TCHI?".
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: Golden-bellied Flycatcher and Golden-crowned Flycatcher.