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Barrow's Goldeneye

Bucephala islandica

General Status Rank:

Secure

ELCODE:

ABNJB18020

Common Name:

Barrow's Goldeneye

Scientific Name:

Bucephala islandica

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Taxonomy

Group:

Bird

Kingdom:

Animalia

Phylum:

Chordata

Class:

Aves

Order:

Anseriformes

Family:

Anatidae

References:

General Biology

Female Age at Maturity

2

References:

Longevity

average age unknown, oldest known was 18 years

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Economic/Human Considerations

important to sport hunters in southern Canada and US

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Habitat

acidic or alkaline freshwater, cavity nester (conifers, deciduous - originally excavated by Pileated woodpeckers and Northern Flickers) (B004) specific habitat requirements for breeding sites (nest in cavities primarily excavated by Pileated Woodpeckers in old, large-diameter trees adjacent to productive ponds).

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Distribution

Ecozones

Taiga Cordillera, Taiga Plains, Boreal Cordillera

References:

Distribution

0.14 (B004); ~15% of total NWT area with possible range extensions north and east. Range extent visually estimated from range map in "Distribution of birds in NWT & Nunavut: 2009 Review" (CWS).

Score:

F

References:

Winter Distribution Description:

2 populations: birds in NWT belong to Western population and winter along the coast from Kodiak archipelago, Alaska, south to N.California

Number of Occurrences

number of known occurrences is <100, dispersed breeder

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Historical Distribution

unknown, but possibly similar to present

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Area of Occupancy

unknown, but likely stable

Score:

-

References:

Population

Population Size

Crude population estimate of 200,000-250,000 for western population of BAGO (R271) <5% of range falls within the NWT. NWT numbers unknown but estimate 1,000-2,000 based on BAGO at north eastern limit of range extent in the NWT and

Score:

D

References:

Density

dispersed breeder

Trends

Trends

Trends are uncertain (R266)

References:

Threats

Threats

Greatest threats include forestry operations (cavity nester) and introduction of fish to fishless lakes on its breeding grounds, and oil spills on wintering grounds, low in the NWT (R266)

Score:

C

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Intrinsic Vulnerability

Forestry and possibly pollution, development, global climate change ; pressures from loss of wetlands and deforestation is a problem in southern breeding areas.

Score:

-

References:

General Status Rank

Rank:

Secure

Status Rank Description:

but limited distribution in NWT, at eastern edge of distribution

S Rank:

S4

Decision Process Description:

Drafted by S. Carriere, using scores by Grant Gilchrist based mostly on printed material in 2000; Reviewed in 2005 by J. Hines and C. Swoboda based mostly on printed literature, no change in status; Reviewed in 2010;no change ; Reviewed by Ian Fife and Cindy Wood CWS in 2015, no change

Last Updated:

February 16, 2015

References

Age Of Maturity

Bellrose, RC (1980) Ducks, geese, and swans of North America. Wildlife Mangement Institute and Stackpole Books 3rd edition CWS office. Yellowknife - B999 Return

Area of Occupancy

Bellrose, RC (1980) Ducks, geese, and swans of North America. Wildlife Mangement Institute and Stackpole Books 3rd edition CWS office. Yellowknife - B999 Return
Canadian Wildlife Service Waterfowl Committee (2004) Population Status of Migratory Game Birds in Canada: November 2004. CWS CWS Migratory Birds Regulations No. 13 http://www.cws-scf.ec.gc.ca/publications/AbstractTemplate.cfm?lang=e&id=1073 - CS01 Return
Canadian Wildlife Service Waterfowl Committee. 2014. Population Status of Migratory Game Birds in Canada: November 2014. CWS Migratory Birds Regulatory Report Number 44. (2014) CWS Migratory Birds Regulatory Report Number 44. - R266 Return

Economic Status

Bellrose, RC (1980) Ducks, geese, and swans of North America. Wildlife Mangement Institute and Stackpole Books 3rd edition CWS office. Yellowknife - B999 Return

Ecozones

Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Habitat

Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return
Gilchrist Grant (2000) Pers. communication. Wildlife Population Biologist, Eastern Arctic, CWS Yellowknife - H131 Return
Eadie, J. M., J.-P. L. Savard, and M. L. Mallory (2000) Barrow’s Goldeneye (Bucephala islandica) in Birds of North America. The Academy of Natural Sciences and The American Ornithologists' Union Philadelphia and Washington, D.C. No. 548 - CS28 Return

Historical Distribution

Bellrose, RC (1980) Ducks, geese, and swans of North America. Wildlife Mangement Institute and Stackpole Books 3rd edition CWS office. Yellowknife - B999 Return

Intrinsic Vulnerability

Canadian Wildlife Service Waterfowl Committee. 2014. Population Status of Migratory Game Birds in Canada: November 2014. CWS Migratory Birds Regulatory Report Number 44. (2014) CWS Migratory Birds Regulatory Report Number 44. - R266 Return

Longevity

Eadie, J. M., J.-P. L. Savard, and M. L. Mallory (2000) Barrow’s Goldeneye (Bucephala islandica) in Birds of North America. The Academy of Natural Sciences and The American Ornithologists' Union Philadelphia and Washington, D.C. No. 548 - CS28 Return

NWT Known Subspecies

Bellrose, RC (1980) Ducks, geese, and swans of North America. Wildlife Mangement Institute and Stackpole Books 3rd edition CWS office. Yellowknife - B999 Return

Number of Occurrences

Gilchrist Grant (2000) Pers. communication. Wildlife Population Biologist, Eastern Arctic, CWS Yellowknife - H131 Return

Population Size

Bromley, R.G. (1988) Waterfowl of the Northwest Territories: The extent and management of a world class resource. Prince of Wales Northern Heritage Centre Occasional papers of the Prince of Wales Northern Hertitage Centre No. 3 (1988) p. 53-73 CWS office. Yellowknife - GG3 Return

,

Sea Duck Joint Venture (2005) Goldeneye. Sea Duck Joint Venture; website, sppfactsheet.pdf http://www.seaduckjv.org/infoseries/bago_ - CS27 Return

,

Sea Duck Joint Venture (SDJV). (2008) - R271 Return

Range Extent

Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Short Term Trends

Bellrose, RC (1980) Ducks, geese, and swans of North America. Wildlife Mangement Institute and Stackpole Books 3rd edition CWS office. Yellowknife - B999 Return
Canadian Wildlife Service Waterfowl Committee (2004) Population Status of Migratory Game Birds in Canada: November 2004. CWS CWS Migratory Birds Regulations No. 13 http://www.cws-scf.ec.gc.ca/publications/AbstractTemplate.cfm?lang=e&id=1073 - CS01 Return
Canadian Wildlife Service Waterfowl Committee. 2014. Population Status of Migratory Game Birds in Canada: November 2014. CWS Migratory Birds Regulatory Report Number 44. (2014) CWS Migratory Birds Regulatory Report Number 44. - R266 Return

Taxonomy

Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Threats

Canadian Wildlife Service Waterfowl Committee. 2014. Population Status of Migratory Game Birds in Canada: November 2014. CWS Migratory Birds Regulatory Report Number 44. (2014) CWS Migratory Birds Regulatory Report Number 44. - R266 Return