Population information

Order name Anseriformes
Family name Anatidae
Scientific name Histrionicus histrionicus Common name Harlequin Duck
Population name E & SW Greenland (non-bre)
Breeding range N Quebec, Nunavut, N Labrador Non-breeding range E & SW Greenland
Red List Category Least Concern
Ramsar regions North America
Notes Birds breeding in E Canada and those breeding in Greenland were treated as separate populations, except in WPE3 when satellite tracking revealed many birds from Canada moult and winter in SW Greenland. However in WPE4, it was considered that there was no evidence of significant exchanges between the USA/Canadian wintering population and that of Greenland and these two populations were again separated on the basis of their wintering areas.

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 1,000 2,000 [R529]
WPE 2 0 0 1,000 2,000 [R529]
WPE 3 0 0 -1 -1
WPE 4 0 0 8,250 16,500 [S5633] [R622]
WPE 5 0 0 8,250 16,500 [S8142] [R622]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 5 0 0 Unknown No idea

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 15
WPE 2 1997 15
WPE 3 0 -1
WPE 4 2006 125
WPE 5 2012 120

References

  • R529 - Pihl, S. (pers. comm.). 1994. Summary of unpublished seaduck data from Greenland.
  • R622 - Thomas, P. W. and M. Robert, 2002. COSEWIC Status Report of the Eastern Canada Harlequin Duck (Histrionicus histrionicus). Report prepared for the Committee on the Status of Endangered Wildlife in Canada (COSEWIC), Ottawa, Ontario.

Notes

  • S5633 - There is no evidence of significant exchanges between the USA/Canadian wintering population and that of Greenland and these two populatios have been separated on the basis of their wintering areas. 76 estimated about 5,000-10,000 moulting Harlequin Ducks in Greenland. It is unknown which proportion breeds in Canada. Assuming a proportion of 25% of the males that are unpaired as well as the presence of moulting females in the count (guessed at 10%). This yields an estimated population of: 8,250 - 16,500 birds.
  • S8142 - There is no evidence of significant exchanges between the USA/Canadian wintering population and that of Greenland and these two populatios have been separated on the basis of their wintering areas. 76 estimated about 5,000-10,000 moulting Harlequin Ducks in Greenland. It is unknown which proportion breeds in Canada. Assuming a proportion of 25% of the males that are unpaired as well as the presence of moulting females in the count (guessed at 10%). This yields an estimated population of: 8,250 - 16,500 birds.



Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on