Population information

Order name Podicipediformes
Family name Podicipedidae
Scientific name Podiceps auritus Common name Horned Grebe
Population name cornutus
Breeding range N USA, Canada, Alaska Non-breeding range Coastal North America
Red List Category Vulnerable
Ramsar regions North America
Notes

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 -1
WPE 2 1987 1991 100,000 1,000,000 [R497]
WPE 3 1987 1991 100,000 1,000,000 [R497]
WPE 4 1987 1991 100,000 1,000,000 [R497]
WPE 5 1993 2005 200,000 500,000 Census based [R1051]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1966 1991 STA [R635]
WPE 2 1966 1996 DEC [R565]
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 5 1993 2005 DEC Good [R1051]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 0 -1
WPE 3 2002 10000
WPE 4 2006 10000
WPE 5 2012 3200

References

  • R635 - Trapp, J. (pers. comm.). 1993. Unpublished data from the North American Breeding Bird Survey 1966-1991 compiled by USFWS for IWRB.
  • R497 - O'Donnel, C.F.J. and Fjelds?, J. 1995. Grebes: a global action plan for their conservation. IUCN.
  • R565 - Sauer, J.R., Schwartz, S., Peterjohn, B.G. and Hines, J.E. 1996. The North American Breeding Bird Survey Home Page. Version 94.3 Natl. Biol. Serv., Patuxtent Wildlife Research Center, Laurel MD. URL: http://www.mbr.nbs.gov/bbs/bbs.html.
  • R1051 - COSEWIC. 2009a. COSEWIC assessment and status report on the Horned Grebe Podiceps auritus, Western population and Magdalen Islands population, in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vii + 42 pp.

Notes




Copyright Wetlands International 2012

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