Common Names:
Habitat:
Description: Costa's have a light green back lacking rufous coloring on its short tail. Adult males have an iridescent purple crown and gorget (throat patch) that extends down around the outside of the chest (flared). Adult male Anna's have more red in their crown and gorget and their gorget is not flared. Female Costa's has gray underparts and may have a purple spot in the center of her throat. Females and juveniles are difficult to distinguish from Black-chinned and Anna's Hummingbirds. Source: Aududon Society.com

Comments: Adult males have an extravagant loop and dive display that tells other birds its species and fitness. The total distribution in both breeding and nonbreeding seasons is small. This, combined with widespread habitat destruction and alteration, has landed this bird on the Audubon WatchList.