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

Golden-winged Parakeet
Brotogeris chrysoptera
The golden-winged parakeet is about 16 cm (6.3 in) long and weighs 47 to 80 g (1.7 to 2.8 oz). The species is almost entirely green. Adults of the nominate subspecies have a browish frontal band above the bill, and orange-brown spot on the chin, and bright orange primary coverts. Subspecies B. c. tuipara has an orange frontal band and chin and yellow edges on the outer tail feathers. B. c. chrysosema has a yellowish orange frontal band and yellow primary coverts. B. c. solimoensis is like chrysosema but with a paler frontal band. B. c. Voice: The golden-winged parakeet's common calls are "a high-pitched "klee", shrill "chree" or bisyllabic "chree-chree"" that are given both from a perch and in flight. It also makes "a fast chattering series "cra-cra-cra-cra-cra"." Members of flocks in flight often call simultaneously, making a cacophony.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
Learn this pair in the BeakBrain App
Photo and call practice. Coming soon to iPhone and Android.
Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Cobalt-winged Parakeet and Golden-winged Parakeet.