Blue-winged Macaw
Primolius maracana
It has a total length of approximately 36–43 cm (14–17 in). It has a moderately sized black bill, a long tail and a mainly green plumage. The upperside of the remiges and primary coverts are blue, as indicated by its common name. The underside of the wings is yellowish, the tail-tip, crown and cheeks are bluish, and the tail-base and small belly-patch are red. The iris is amber. It and the red-bellied macaw are the only macaws where the bare facial-skin is yellowish, but this often fades to white in captivity.
ID text from Wikipedia, CC BY-SA 4.0
Golden-collared Macaw
Primolius auricollis
It has a total length of about 38 cm (15 in), of which almost half is tail feathers. The general plumage is green, with a distinct yellow collar that is broadest on the back of the neck. The yellow collar develops as the bird ages, with more vibrant colors found in mature birds. The front and crown is brownish black. The remiges and primary coverts are blue and the long, pointed tail has a red base, a narrow green center and a blue tip. The underside of the tail and flight feathers are greenish-yellow, similar to that of several other small macaws such as the blue-winged and red-bellied macaw.
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: Blue-winged Macaw and Golden-collared Macaw.