Calypte anna

Anna's Hummingbird, Calypte anna (formerly Archilochus anna), is a relatively sedentary West Coast species that breeds and overwinters primarily from extreme southwestern British Columbia south to Baja California. It is found year-round in California and very rarely wanders eastward in autumn. For locations in which it has been reported as a vagarnt, see list of Hummingbirds by U.S. States.

Juvenile males are essentially indistinguishable from females, which resemble female Ruby-throated Hummingbirds, Archilochus colubris.

FIELD MARKS: Length is about 9cm (3.5"). Adult males have a dark, rose-colored gorget and crown, gray-green breast, and green back; the tail is dark. Adult females have a paler breast, green back, and a white throat that usually bears a few dark rose feathers; outer tail feathers have white tips. Immatures resemble adult females but usually lack throat markings. All ages and sexes have a long, straight, thin black bill.

If you have a sharp photo of an Anna's Hummingbird you wou d like to contribute for this page, please send it to PROJECTS with info about when and where the photo was taken, the photographer's name, and any anectdotal info about the bird.

Anna's Hummingbird, Archilochus anna, adult male

Adult Male (above) and Adult Female (below)

Anna's Hummingbird, Archilochus anna, adult female

Photographs courtesy of Animal Pictures Archive


Breeding Bird Survey Results (above)

Christmas Bird Count Results (below)

Maps courtesy of Patuxent Wildlife Research Center, U.S. Geological Survey

John James Audubon's rendering of Anna's Hummingbirds
(which he called "Columbia Hummingbirds") from
Birds of North America
(Royal Octavo edition above, elephant folio below)

NOTE: Although Ruby-throated Hummingbirds are the primary focus of "Operation RubyThroat: The Hummingbird Project", we are also interested in other hummingbird species--especially vagrants that appear in winter (mid-October through mid-March) in the eastern U.S. If you know of a wintering hummingbird east of the Mississippi, please report it to RESEARCH. We will contact a local hummingbird bander about capturing the bird, identifying and banding it, and releasing it unharmed.

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