Cobalt-winged Parakeet
Brotogeris cyanoptera
The cobalt-winged parakeet is 18 to 20 cm (7.1 to 7.9 in) long and weighs an average of 67 g (2.4 oz). The species is almost entirely green that is darker on its upperparts. Adults of the nominate subspecies B. c. cyanoptera have a yellowish forehead, an orange chin, and a blue tinge on their crown and nape. Their flight feathers are blue; their central tail feathers are also blue and the rest are green. Immature birds are a duller version of the adult. Subspecies B. c. gustavi has very little blue on its head and a yellow edge on the carpals. B. c. Voice: The cobalt-winged parakeet's common calls are " a high-pitched "klee", shrill "chree" or bisyllabic "chree-chree"" that are given both when perched and in flight. Another call is "a fast chattering series "chichichichichi"." Members of flocks call simultaneously and make "a shrill chattering".
ID text from Wikipedia, CC BY-SA 4.0
White-winged Parakeet
Brotogeris versicolurus
The white-winged parakeet typically is 22 cm in length, and is mostly green in color. It has a trailing yellow edge on its folded wings. Its most distinguished characteristic is the white wing patches most noticed when the bird is in flight. It is closely related to the yellow-chevroned parakeet, and the two have often been considered conspecific.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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