Audubon's Oriole
Icterus graduacauda
The male of the species has a black hood, mandible, and throat, as well as a black tail. Wings are black, but the remiges and rectrices (flight feathers) are fringed with white. The secondary coverts form yellow epaulets. The back and vent are yellow washed with olive, and the underside is almost uniformly yellow. Females of this species have a slightly more olive nape and back than the males. The adult female's plumage is similar to the juvenile plumage; however, unlike adults, the wings are dull brown instead of black. Voice: The song of the Audubon's oriole is a series of slow, slurry whistles. Its calls include a nasal "ike, ike, ike" and a whistled "peu".
ID text from Wikipedia, CC BY-SA 4.0
Black-vented Oriole
Icterus wagleri
The black-vented oriole is 20.5 to 23 cm (8.1 to 9.1 in) long. Males weigh an average of about 41 g (1.4 oz) and females an average of 39 g (1.4 oz). Adult males of the nominate subspecies have a black head, throat, upper breast, mantle, back, rump, uppertail coverts, and tail. Their lowermost belly and undertail coverts are also black. Their wing is mostly black with orange-yellow lesser and median coverts that show as an epaulet on the closed wing. Their underparts have a tinge of chestnut just below the black breast and are otherwise orange-yellow. Voice: The black-vented oriole has a rather unmusical song that is "a mix of fast warbles with twittering and nasal or rasping notes". Its call is "a distinctive nasal eeeaahnk!".
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: Audubon's Oriole and Black-vented Oriole.