Pomarine Jaeger

Stercorarius pomarinus

General Status Rank: 
Secure
ELCODE: 
ABNNM01010
Common Name: 
Pomarine Jaeger
Scientific Name: 
Stercorarius pomarinus
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Taxonomy
Group: 
Bird
Kingdom: 
Animalia
Phylum: 
Chordata
Class: 
Aves
Order: 
Charadriiformes
Family: 
Stercorariidae
References: 
B004
Habitat
low tundra with freshwater
References: 
B004
H131
Distribution

Ecozones

Arctic Cordillera, Northern Arctic, Southern Arctic
References: 
B004

Distribution

0.11; Erratic distribution coinciding with lemming populations, but generally relatively widespread in the Inuvialuit Settlement Region. Range estimated from map provided in Canadian Wildlife Service - Prairie and Northern Region, 2009. Bird Distributions in Nunavut and the Northwest Territories: 2009 Review.
Score: 
FG
References: 
B004
Winter Distribution Description: 
at sea, on either side of the equator

Number of Occurrences

Numerous observations on record for the NWT (DD15 Accessed 28Jan2015, W113 Aug 2014.).
Score: 
DE
References: 
H131
W113
DD15

Historical Distribution

unknown
References: 
H131

Area of Occupancy

unknown, likely stable
Score: 
-
References: 
H131
Population

Population Size

exact numbers unknown, N.Am. population ca. 20,000-40,000 breeders; No population estimate available for the NWT.
References: 
H131
CS26

Density

solitary
Trends

Trends

likely stable
References: 
H131
Threats

Threats

Human disturbance, contaminants, pollution;Because this species relies on sporadic populations of large lemmings for successful reproduction, it is probably the most vulnerable of the 3 species to human disturbance (CS39)
Score: 
BC
References: 
H131
CS39

Intrinsic Vulnerability

possibly pollution, development, global climate change
Score: 
-
References: 
H131
CS39
General Status Rank
Rank: 
Secure
Status Rank Description: 
Designated conservation status "Low Concern" by Wings Over Water 2003 (CS26). Because this species relies on sporadic populations of large lemmings for successful reproduction, it is probably the most vulnerable of the 3 species to human disturbance (CS39).Specific information in the NWT is lacking, but apparently secure. No evidence of significant threats or population declines in the NWT.
S Rank: 
S5
Decision Process Description: 
Drafted by Grant Gilchrist in 2000 based mostly on printed material. Reviewed in 2005 by C. Swoboda, no change in status.; Reviewed in 2010;no change; Reviewed by Paul F. Woodard CWS in 2015,modified from undetermined to secure based on more information
Last Updated: 
February 4, 2015

References

Area of Occupancy

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

Historical Distribution

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

Intrinsic Vulnerability

  • Gilchrist Grant (2000) Pers. communication. Wildlife Population Biologist, Eastern Arctic, CWS Yellowknife - H131 Return
  • Wiley, R. H., and D. S. Lee (2000) Pomarine Jaeger in Birds of North America. No. 483, The Academy of Natural Sciences and The American Ornithologists' Union - CS39 Return

NWT Known Subspecies

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

Number of Occurrences

  • Gilchrist Grant (2000) Pers. communication. Wildlife Population Biologist, Eastern Arctic, CWS Yellowknife - H131 Return
  • Audubon and Cornell Lab of Ornithology and Bird Studies Canada (2015) http://ebird.org/content/canada/ - W113 Return
  • CWS (2014) CWS Unpublished Data - DD15 Return

Population Size

Gilchrist Grant (2000) Pers. communication. Wildlife Population Biologist, Eastern Arctic, CWS Yellowknife - H131 Return
,
Anonymous (2003) Wings over Water – Canada’s Waterbird Conservation Plan. Canadian Wildlife Service, - CS26 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

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

Taxonomy

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

Threats

  • Gilchrist Grant (2000) Pers. communication. Wildlife Population Biologist, Eastern Arctic, CWS Yellowknife - H131 Return
  • Wiley, R. H., and D. S. Lee (2000) Pomarine Jaeger in Birds of North America. No. 483, The Academy of Natural Sciences and The American Ornithologists' Union - CS39 Return