First off, when did the change from Peach-faced Lovebird to Rosy-faced Lovebird happen? Anyway, these lovebirds have established themselves pretty solidly in the Phoenix metro area of Arizona. They've also been seen in Florida, but as far as I know have not established feral populations there, so those sightings may have been recently escaped pets. We used to get these Lovebirds at our backyard feeders when we lived in Mesa and I could count on their fly-bys on Sunday morning in the church parking lot. They can be loud and raucous, but they are just so darn pretty. The Red-winged Blackbirds on the right in the photo above seem to be looking on with jealousy. The Gilbert Water Ranch has been a pretty consistent place to see them.
These lovebirds are often kept in cages as pets, and those that you see in Arizona are feral populations of escaped pets. They seem to be quite self-sustaining and the Arizona desert is a pretty decent replica of their native African habitat. I prefer to see them in the wild acting like wild parrots should act, even if they are in a foreign land.
|Rosy-faced Lovebird's native ranch in southwestern Africa - Namib Desert - similar in elevation and climate to Phoenix, Arizona (map from Wikipedia)|