BC Conservation Data Centre: Species Summary
Calypte anna
Anna's Hummingbird
| Scientific Name: | Calypte anna (Lesson, 1829) | ||||||||||
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| English Name: | Anna's Hummingbird | ||||||||||
| Classification / Taxonomy | |||||||||||
| Scientific Name - Concept Reference: | American Ornithologists' Union (AOU). 1998. Check-list of North American birds. Seventh edition. American Ornithologists' Union, Washington, D.C. [as modified by subsequent supplements and corrections published in The Auk]. Also available online: http://www.aou.org/. | ||||||||||
| Classification Level: | Species | ||||||||||
| Species Group: | Vertebrate Animal | ||||||||||
| Species Code: | B-ANHU | ||||||||||
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| Conservation Status / Legal Designation | |||||||||||
| Global Status: | G5 (Apr 2016) | ||||||||||
| Provincial Status: | S5 (Mar 2022) | ||||||||||
| BC List: | Yellow | ||||||||||
| Provincial FRPA list: | |||||||||||
| Provincial Wildlife Act: | |||||||||||
| COSEWIC Status: | |||||||||||
| SARA Schedule: | |||||||||||
| General Status Canada: | 4 - Secure (2005) | ||||||||||
| Migratory Bird Convention Act: | Y | ||||||||||
| Ecology & Life History | |||||||||||
| General Description: | |||||||||||
| Global Reproduction Comments: | Breeding season varies with location. Clutch size is 2. Incubation, by female, lasts 14-19 days. Young are tended by female, leave nest in 18-26 days, independent in 1-2 weeks. Individual females produces two broods annually in many areas (Johnsgard 1983). | ||||||||||
| Global Ecology Comments: | Males occupy territories for extended periods; territories are not necessarily related to food supply and quality (Powers 1987). | ||||||||||
| Migration Characteristics: (Global / Provincial) | |||||||||||
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Nonmigrant: Local Migrant: Distant Migrant: Within Borders Migrant: |
Y / Y / N / na / |
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| Global Migration Comments: | Seasonal movements are complex. Some individuals ascend to montane regions in summer after breeding. Others migrate southward or northward, or move eastward across Arizona and New Mexico. Local populations may include individuals that are resident throughout the year as well as migrants that have spent part of the year elsewhere. See Clark and Russell (2012) for further discussion. | ||||||||||
| Habitats: (Type / Subtype / Dependence) |
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| Global Habitat Comments: | Habitat includes open woodland, chaparral, scrubby areas, and partly open situations, including gardens and meadows, in lowlands and seasonally in montane regions (AOU 1998). Nests are in trees, vines, shrubs, or artificial substrates in wide variety of locations, from <1 to about 9 meters above ground (see Clark and Russell 2012 for further information). | ||||||||||
| Food Habits: |
Invertivore: Adult, Immature
Nectarivore: Adult, Immature |
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| Global Food Habits Comments: | Diet includes nectar, tree sap (e.g., at sapsucker holes), and small insects and spiders (caught in air; gleaned from tree trunks). Nectar sources include Eucalyptus, Nicotiana, Agave, Castilleja, Diplaucus, Ribes, Silena, Arctostaphylos, and many other native and exotic species (Clark and Russell 2012). | ||||||||||
| Global Phenology: |
Diurnal: Adult, Immature
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| Provincial Phenology: (1st half of month/ 2nd half of month) |
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| Colonial Breeder: | N | ||||||||||
| Length(cm)/width(cm)/Weight(g): | 10/ / 4 | ||||||||||
| Elevation (m) (min / max): |
Global:
Provincial: |
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| Distribution | |||||||||||
| Endemic: | N | ||||||||||
| Global Range Comment: | Breeding range includes the Pacific slope of western North America from southwestern British Columbia, western Washington, western Oreagon, and western California south to northwestern Baja California, including Santa Catalina, Santa Cruz, and San Clemente islands in California and Isla Guadalupe, Mexico; eastward in southern California to the edge of the Mohave and Sonoran deserts, and in the lower Colorado River Valley and across the southern third of Arizona (at lower elevations in mesic situations), with nesting probable but unconfirmed in extreme southwestern New Mexico (Peloncillo Mountains, Hidalgo County; one breeding record in Texas, Davis Mountains; nesting in Nevada is not known, but the species is present throughout much of the year (Howell and Webb 1995, AOU 1998, Clark and Russell 2012). Winter range extends from central British Columbia south to central Baja California, and east to Utah (casually), southern Arizona, central New Mexico, northern Sonora, and northern Chihuahua, casually north to south-coastal Alaska, central British Columbia, and western Montana, and east to central New Mexico, northern Coahuila, and east-central and southeastern Texas, southern Louisiana, southern Mississippi, and southern Alabama (AOU 1998). |
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| Authors / Contributors | |||||||||||
| Global Information Author: | Hammerson, G. | ||||||||||
| Last Updated: | May 04, 2015 | ||||||||||
| Provincial Information Author: | |||||||||||
| Last Updated: | |||||||||||
| References and Related Literature | |||||||||||
American Ornithologists' Union (AOU). 1983. Check-list of North American Birds, 6th edition. Allen Press, Inc., Lawrence, Kansas. 877 pp. |
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Bleiweiss, R., J. A. W. Kirsch, and J. C. Matheus. 1994. DNA-DNA hybridization evidence for subfamily structure among hummingbirds. Auk 111:8-19. |
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Bureau of Land Management. Life History Summaries. |
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Campbell, R.W., N.K. Dawe, I. McTaggart-Cowan, et al. 1990b. The Birds of British Columbia Vol. 2: Nonpasserines: Diurnal Birds of Prey through Woodpeckers. Royal British Columbia Museum, Victoria, BC. |
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Harrison, C. 1978. A Field Guide to the Nests, Eggs and Nestlings of North American Birds. Collins, Cleveland, Ohio. |
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Johnsgard, P. A. 1983c. Hummingbirds of North America. Smithsonian Institution Press, Washington, D.C. 304 pp. |
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Powers, D. R. 1987. Effects of variation in food quality on the breeding territoriality of the male Anna's hummingbird. Condor 89:103-111. |
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Stiles, F. G. 1972. Food supply and the annual cycle of the Anna hummingbird. Univ. California Publ. Zool. 97: 1-109. |
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Terres, J. K. 1980. The Audubon Society encyclopedia of North American birds. Alfred A. Knopf, New York. |
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Please visit the website Conservation Status Ranks for definitions of the data fields used in this summary report.
Suggested Citation:
B.C. Conservation Data Centre. 2015. Species Summary: Calypte anna. B.C. Minist. of Environment. Available: https://a100.gov.bc.ca/pub/eswp/ (accessed Jun 7, 2026).