Anna's Hummingbird
Calypte anna
This male was photographed in Patagonia, Arizona and is on Wikimedia.
There were three females trying to monopolize a single fruit on this saguaro at North Mountain Park in Phoenix, Arizona.
These hummingbirds are now the most common species seen at backyard feeders in Phoenix and Tucson, Arizona. Prior to the 1960's they were mostly only a temporary resident during the winter months - the remainder of the year their permanent home was coastal Southern California. The popularity of feeders no doubt has played a role in this population shift.
Here a female hovers at a hummingbird feeder. Notice that there are a few flecks of irridescent feathers on the chin.