Streak-backed Oriole
Icterus pustulatus
The streak-backed oriole is 19 to 21 cm (7.5 to 8.3 in) long. Males weigh an average of about 43 g (1.5 oz) and females about 35 g (1.2 oz). Adult males of the nominate subspecies I. p. pustulatus have a deep orange head and breast with black lores, chin, and upper breast. Their upperparts are orange with heavy black streaks on the mantle and back. Their tail is mostly black with white tips on all the feathers and white outer edges on the outermost pair. Their lesser upperwing coverts are orange and the rest of their upperwing is mostly black. Voice: The streak-backed oriole's song is a "pleasant series of sweet, clear whistles (some elements repeated)" and its calls include " a saweet!-taweee!-tawee-tawee, a soft churr'teee, and harsh chatters".
ID text from Wikipedia, CC BY-SA 4.0
Yellow-backed Oriole
Icterus chrysater
Yellow-backed orioles are a yellow-bodied, sexually monomorphic species. They average 21.5 cm (8.5 in) in length from beak to tail; making it a relatively medium-sized oriole species. Exposed skin and claws are bluish-black; in adults, the bill is black, with the base of the mandible becoming bluish-grey. Adult males display strongly contrasting yellow and black plumage. The wings, tail, shoulders, throat, and face are all black; by contrast, the back and underparts are an extremely bright yellow. Adult females closely resemble males, but yellow parts appear slightly greenish.
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: Streak-backed Oriole and Yellow-backed Oriole.