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Northern Shoveler

Spatula clypeata (Anas clypeata)

General Status Rank:

Secure

ELCODE:

ABNJB10150

Common Name:

Northern Shoveler

Scientific Name:

Spatula clypeata (Anas clypeata)

Synonyms:

Anas clypeata

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Taxonomy

Group:

Bird

Kingdom:

Animalia

Phylum:

Chordata

Class:

Aves

Order:

Anseriformes

Family:

Anatidae

References:

General Biology

Female Age at Maturity

1

References:

Economic/Human Considerations

important to sport hunters in southern Canada and US

References:

Habitat

very shallow freshwater

References:

Distribution

Ecozones

Taiga Cordillera, Taiga Plains, Taiga Shield, Boreal Cordillera, Boreal Plains

References:

Distribution

~75% of total NWT area. Range extent visually estimated from range map in "Distribution of birds in NWT & Nunavut: 2009 Review" (CWS). More than in B004

Score:

G

References:

Winter Distribution Description:

coastal BC and coastal US

Number of Occurrences

dispersed breeder

Score:

D

References:

Historical Distribution

unknown, but possibly similar to present

References:

Area of Occupancy

prob. stable

Score:

-

References:

Population

Population Size

116,135 NOSH in NWT in 2014 (data from 2014 USFWS waterfowl breeding surveys, strata 13-18 (W119) accessed Feb 6, 2015).

Score:

G

References:

Density

dispersed breeder

Trends

Trends

NSHO have increased 7% above previous year and 67% above long-term average (R265)

Score:

I

References:

Threats

Threats

potential over-hunting, habitat loss, drought; pressures on population occur mainly outside NT/NU in prairie breeding areas and wintering grounds

Score:

C

References:

Intrinsic Vulnerability

In north, pollution, development, global climate change,but in core southern breeding areas.pressures from loss of wetlands and upland nesting cover due to agriculture major problem; limited threats in NWT

Score:

-

References:

General Status Rank

Rank:

Secure

S Rank:

S5

Decision Process Description:

Drafted by Jim Hines with review by S. Carriere, mostly based on printed material in 2000; Reviewed in 2005 by J. Hines and C. Swoboda based on printed literature only, 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

Zimpfer, Nathan L., Walter E. Rhodes, Emily D. Silverman, Guthrie S. Zimmerman, and Ken D. Richkus. (2014) U.S. Fish and Wildlife Service. Administrative Report July 2, 2014. http://www.fws.gov/migratorybirds/Newreportspublications/PopulationStatus/Trends/2014%20Trends%20in%20Breeding%20Duck%20Populations.pdf - R265 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
Carrière, S. (2000) Pers. communication. Ecosystem Management Biologist; RWED - H126 Return
Hines, Jim (2000) Pers. communication. Wildlife biologist, CWS, Yellowknife - H127 Return

Historical Distribution

Hines, Jim (2000) Pers. communication. Wildlife biologist, CWS, Yellowknife - H127 Return

Intrinsic Vulnerability

Bellrose, RC (1980) Ducks, geese, and swans of North America. Wildlife Mangement Institute and Stackpole Books 3rd edition CWS office. Yellowknife - B999 Return
Hines, Jim (2000) Pers. communication. Wildlife biologist, CWS, Yellowknife - H127 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

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

Population Size

USFWS (2014) Accessed by CWS Region (Ian Fife and Cindy Wood) February 2015 https://migbirdapps.fws.gov/mbdc/databases/mas/maydb.asp - W119 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

Zimpfer, Nathan L., Walter E. Rhodes, Emily D. Silverman, Guthrie S. Zimmerman, and Ken D. Richkus. (2014) U.S. Fish and Wildlife Service. Administrative Report July 2, 2014. http://www.fws.gov/migratorybirds/Newreportspublications/PopulationStatus/Trends/2014%20Trends%20in%20Breeding%20Duck%20Populations.pdf - R265 Return

Taxonomy

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

Threats

Bellrose, RC (1980) Ducks, geese, and swans of North America. Wildlife Mangement Institute and Stackpole Books 3rd edition CWS office. Yellowknife - B999 Return
Hines, Jim (2000) Pers. communication. Wildlife biologist, CWS, Yellowknife - H127 Return