Hardier
than many hummingbirds, Anna's Hummingbirds are year-round residents on the
Pacific Coast of the United States. They are very common in their normal
range, and have adapted well to a human presence. They have expanded their
range in recent decades, especially in and around towns and cities where gardens
and other planted flowers provide a ready source of nectar. Members of the
Calypte family of hummingbirds, they can be recognized by the uniquely
reddish colored gorget which extends relatively far down the side of their
necks, and an extension of the reddish feathering on the crown and head.
While Anna's Hummingbirds do occasionally wander far to the east and north of
their normal range, the species was unknown in South Dakota until a single male
specimen was documented in October 2008 in Rapid City.
Habitat: Found in a wide variety of habitats with
suitable flowering plants, primarily in lower-elevation areas (although
sometimes in higher elevation mountain meadows as well). Potential
habitats include open woodlands, riparian areas, arid shrublands and brush, and
city gardens and parks.
Diet: Typical hummingbird diet, consisting largely of
nectar, and when available, small insects that are largely caught in flight.
Behavior: One of the most vocal hummingbirds, with
male Anna's Hummingbirds singing a buzzy song during the breeding season.
Males also have a courtship display, consisting of a flight upwards, followed by
a steep and rapid dive towards the female, and ending as the male pulls up in
front of the female, making a loud popping sound.
Song: Males sing a thin, weak buzzy song of several
syllables. They also have a very high thin thit call.
Migration: Generally a permanent resident in its
normal range along the Pacific Coast. Some birds in the eastern part of
their nesting range (such as those in Arizona) move westward towards the coast
after breeding. A few individuals will wander far to the east and north,
primarily in the fall.
Similar Species:
Costa's Hummingbirds, another of the
genus Calypte, have a similar plumage pattern, with an even longer
extended gorget.
Status: Numbers and range have both increased in
recent decades as the species becomes adapted to a human presence.
Further Information:
Photo Information: September 7th, 2006 - Red Rocks
State Park near Sedona, Arizona - Terry Sohl
Additional Photos: Click on the image chips or
text links below for additional, higher-resolution Anna's Hummingbird photos.