Population information

Nom ordre Anseriformes
Nom famille Anatidae
Nom scientifique Anas laysanensis Nom courant Laysan Duck
Nom population Laysan Island
Aire de reproduction Laysan Island, Hawaii Aire de non-reproduction
Catégorie de la Liste Rouge Critically Endangered
Regions Ramsar Oceania
Notes

Réseau de conservation

Réseau de conservation Notes
Pas des Réseaux de conservation
Note:

Taille de population

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 500 500 [R214]
WPE 3 0 0 391 537 [R654]
WPE 4 0 0 391 537 [R654]
WPE 2 0 0 38 500 [R667]
WPE 5 2004 2010 830 1,050 Census based [S8001] [R64] [R1153]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1972 1992 STA [R214]
WPE 3 1992 2002 FLU [R654]
WPE 4 1992 2002 FLU [R654]
WPE 2 0 0 Unknown
WPE 5 2001 2010 INC Good [R1153]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 5
WPE 3 2002 5
WPE 4 2006 5
WPE 2 1997 1
WPE 5 2012 9

References

  • R214 - Ellis-Joseph, S., Hewston, N. and Green, A. (compilers). 1992. Global Waterfowl Conservation Assessment and Management Plan: First Review Draft. Report by the IUCN Captive Breeding Specialist Group and The Wildfowl and Wetlands Trust. 1992. 77 pp.
  • R654 - U.S. Fish and Wildlife Service. 2002c. Draft Revised Recovery Plan for The Laysan Duck, Anas laysanensis.USFWS Region 1., Portland, Oregon, Code U7.
  • R667 - Unpublished information supplied by Wetlands International Specialist Groups, 1997.
  • R64 - BirdLife International. 2005. Threatened birds of the world 2005. Species factsheets available at?www.birdlife.org
  • R1153 - Reynolds, M.H., Brinck, K.W. and Laniawe, L. 2010. Population estimates and monitoring guidelines for endangered Laysan Teal, Anas laysanensis, at Midway Atoll: pilot study results 2008-2010. Report to US Geological Service.

Notes

  • S8001 - Birds now established also on Midway Atoll Estimate combines previous estimate for Laysan Island with latest from Midway Atoll.



Copyright Wetlands International 2012

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