Red-masked parakeet
The red-masked parakeet (Psittacara erythrogenys) is a medium-sized parrot from Ecuador and Peru. It is popular as a pet and are better known in aviculture as the cherry-headed conure or the red-headed conure. They are also considered the best talkers of all the conures. Description
Red-masked parakeets average about 33 cm (13 in) long, of which half is the tail. They are bright green with a mostly red head on which the elongated pale eye-ring is conspicuous; the nape is green. Also, the lesser and median underwing coverts are red, and there is some red on the neck, the thighs, and the leading edge of the wings. Juveniles have green plumage, until their first red feathers appear at around the age of four months. Its call is two-syllabled, harsh and loud. Habitat and distribution
These birds are native to southwestern Ecuador and northwestern Peru, where they primarily live in jungle and deciduous forest. They can also thrive in semiarid regions as well as in suburban regions. While they can live up to  above sea level, they are usually found below the  mark. Their wide distribution and popularity as pets contributes to their successful introduction in other areas upon release especially in the southern and western areas of the United States as exotic feral birds. Feral populations

Escaped cage birds are considered to be introduced in Spain. They make up most of the feral population in San Francisco, California, in the United States, which is documented in the film The Wild Parrots of Telegraph Hill by Judy Irving, based on the book of the same name by Mark Bittner. They are also seen in part of Hawaii. Breeding populations of feral parakeets have been observed in California in San Francisco, San Diego County, Los Angeles, San Gabriel Valley, Sunnyvale, Orange County, Palo Alto and Long Beach. The birds have been observed feeding on the fruits and flowers and nesting in palm trees. Breeding
Clutches average three to four eggs and incubation is over within 23 or 24 days. Nests are usually made in tree cavities and they can breed successfully in small woodlots or even isolated trees in degraded forests. Juvenile birds fledge after 50 days with green plumage. Conservation status
It has been the tenth most common Neotropical parrot imported into the US with over 26,000 parakeets checked in from 1981 to 1985. This bird was formerly more common in its limited range, and was reclassified by the IUCN from a species of least concern to a species that is near threatened in 1994. This is due to declining populations brought by widespread local pet trade in Peru and Ecuador, which has contributed to habitat loss and fragmentation. References

Further reading

Handbook of the Birds of the World Vol 4,  Josep del Hoyo editor, 

red-masked parakeet
Feral parrots
Birds of Ecuador
Birds of Peru
Birds of the Tumbes-Chocó-Magdalena
red-masked parakeet
Taxa named by René Lesson
Species endangered by the pet trade