Scientific Name: Calypte anna
Residency: Year-round resident, central/southern Arizona. Also a year-round resident along the entire West Coast. Anna?s Hummingbird is considered to be a crescent invader from California, a winter resident.
Diet: Nectar and invertebrates such as fruit flies, gnats, mosquitoes, thrips, aphids, spiders, maggots, caterpillars, ants, and insect eggs.
Predators: Larger birds, including the Western Scrub-jays, American Kestrel, Greater Roadrunner, and the Curve-billed Thrasher.
Nesting: Breeding occurs in Spring. Nests are constructed from soft materials such as hair, feathers, and fine strips of bark. Spider webs are used as an adhesive. Anna?s Hummingbirds rarely reuse old nests, preferring to construct new ones. Eggs are bean size.
Nesting Records: Coon Bluff and Scottsdale Community College.
Notes: The Anna?s Hummingbird has grown in number since the 1950's, and has expanded its range further south and east. This species' ability to adapt well to an ever-growing suburban environment, and the accessibility and availability of hummingbird feeders and flowers utilized in many suburban areas, has led to the growth in population numbers of this bird.
Photo: Taken at Scottsdale Community College on February 23, 2007. For more photos, click on camera icon.
