Peach-faced lovebird (Agapornis roseicollis), at Kiwanis Park, in Tempe, Arizona.

These birds are native to the Namib Desert region of southwest Africa. Feral populations are common throughout Phoenix. In this photo the bird’s nest cavity (in a groomed Canary Island date palm) can be seen in the background – real estate probably made by a native woodpecker. Because the rate of cavity creation among native species is so high the lovebirds are not generally considered disruptive.  

Bonus etymology: The generic name is a New Latin construction from the Greek words ἀγάπη (agápē, “love”) and ὄρνις (órnis, “bird”).