Mealy Amazon
Amazona farinosa
The mealy amazon has a total length of about 38–41 cm (15–16 in) and weighs 540–700 g (19–25 oz). Captives commonly are heavier. It is among the largest parrots in the Americas, mainly being surpassed by the large macaws. It has a relatively short and square shaped tail, as do the other members of the Amazona genus. The mealy amazon is mainly green. The back and nape often have a whitish tinge; almost as if it had been covered in a thin layer of flour ("meal"; hence its name).
ID text from Wikipedia, CC BY-SA 4.0

White-fronted Amazon
Amazona albifrons
The white-fronted amazon, at about 25 cm (9.8 in) long, is the smallest of the amazon parrots. This species is named for the bright white patch of feathers on its forehead, although the amount of white varies from individual to individual. They have mostly green plumage with some blue colouring on their outspread wings. They have bright red colouring around their eyes (in some individuals almost like spectacles) and blue colouring behind the patch of white on their foreheads.
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: Mealy Amazon and White-fronted Amazon.