When I first saw one of these in my neighborhood, I thought someone lost their pet bird. Only later I learned that there are feral flocks of Peach-faced Lovebirds scattered around the Valley, especially here in Mesa. Their colors are just amazing, and they're so darn cute.
Peach faced Lovebirds are actually small parrots from an arid region of South Africa, so they have adapted to our sonoran desert quite well. So how in the heck did they end up here in Arizona? Well, they didn't migrate, thats for sure. It is assumed that a few mating pairs of pet Lovebirds escaped from their homes somewhere here in the Valley, and unlike other escaped pet birds, they survived and continued breeding.
They seem to be picky about which feeders they will go to, and only stay for short periods, and at certain times of the day. I have only seen them in my neighbors backyard, and at Gilbert Water Ranch. See the Map of Lovebird sightings in the Phoenix Metro area.