Epaulet Oriole
Icterus cayanensis
The epaulet oriole is about 22 cm (8.7 in) long. Males weigh an average of about 45 g (1.6 oz) and females an average of about 42 g (1.5 oz). The sexes have the same plumage. Adults of the nominate subspecies are almost entirely black. They have yellow lesser and median wing coverts that show as the eponymous epaulet on the closed wing. Subspecies I. c. chrysocephalus is also mostly black but has a golden-yellow crown, nape, rump, epaulets, and thighs. Juveniles of both subspecies are blackish brown rather than pure black and their yellow parts are duller than adults'. Voice: The two subspecies of the epaulet oriole have different but similar songs. That of the nominate is "not very musical and has been described as a varied series of ascending and descending notes, also mixing clicks and buzzes". That of I. c. chrysocephalus is "a slow series of ascending and descending notes, usually grouped in phrases of two to three notes".
ID text from Wikipedia, CC BY-SA 4.0
Scott's Oriole
Icterus parisorum
Scott's oriole is about 23 cm (9.1 in) long with a wingspan of 32 cm (13 in); it weighs 32 to 41 g (1.1 to 1.4 oz). Adult males in breeding plumage have a black head, back, scapulars, throat, and breast. Their rump, uppertail coverts, and underparts below the breast are lemon yellow. Their wings are black with pale yellow lesser and median coverts that show as an epaulet. The wing's greater coverts have white tips that show as a wing bar. Their tail feathers are mostly black with yellow bases and white tips, both of which are larger towards the outer feathers. Voice: The song of Scott's oriole is a "series of varied, short notes...; pure whistles (notes with a single dominant frequency) interspersed with notes that are rapidly modulated in frequency, some ascending, some descending, and some with both ascending and descending portions". Both sexes sing but female song is usually not as complex as male song.
ID text from Wikipedia, CC BY-SA 4.0
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