Violet-crowned Hummingbird (Amazilia violiceps)

Physical Description
Average weight: male 5.78 g, female 5.19 g.

Plumage
Adult male: Emerald green back, violet-blue crown, unmarked white breast and throat, red bill with dark tip.
Adult female: Almost identical to male, but crown is slightly less brilliant.

Distribution
Observed in Arizona, California, New Mexico, and Texas. Winters in Mexico.

For more information, see the USGS species account.