Description
The Yellow-shouldered Amazon is mainly green and about 33 cm long. It has a whitish forehead and lores, and a yellow crown, ocular region and - often - ear coverts and chin. The bare eye-ring is white. The thighs and the bend of the wing ("shoulder") are yellow, but both can be difficult to see. The throat, cheeks and belly often have a bluish tinge. As most members of the genus Amazona, it has broad dark blue tips to the remiges and a red wing-speculum. Its beak is horn coloured.
In its range the yellow shoulder patch and extensive yellow on the head distinguish the Yellow-shouldered Amazon from other Amazona species, which have red or orange on the shoulder and less yellow on the head (the Orange-winged Amazon, which has as much yellow to the head as some Yellow-shouldered Amazons, has a blue ocular region). However, outside its range, several other Amazona species have as much - or more - yellow on their heads.
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