Population information

Order name Pelicaniformes
Family name Phalacrocoracidae
Scientific name Phalacrocorax auritus Common name Double-crested Cormorant
Population name albociliatus
Breeding range SW North America Non-breeding range
Red List Category Least Concern
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 2 0 0 90,000 179,000 [R298]
WPE 3 0 0 90,000 179,000 [R298]
WPE 4 0 0 90,000 179,000 [R298]
WPE 1 0 0 25,000 100,000 [R164]
WPE 5 2000 2011 98,900 107,000 Expert opinion [R298]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 2 1966 1996 STA [R565]
WPE 3 1966 2000 STA [R563]
WPE 4 1966 2000 STA [R563]
WPE 1 0 0 Unknown
WPE 5 2000 2011 STA? [R563]

Population 1% level

Publication Yearset 1 percent Note
WPE 2 1997 1350
WPE 3 2002 1350
WPE 4 2006 1350
WPE 1 0 -1
WPE 5 2012 1000

References

  • R298 - Hatch, J.T. 1995. Changing populations of double-crested cormorants. Colonial Waterbirds 18 (Spec. Publ. 1): 8-24.
  • 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.
  • R563 - Sauer, J. R., J. E. Hines, and J. Fallon. 2001. The North American Breeding Bird Survey, Results and Analysis 1966 - 2000. Version 2001.2, USGS Patuxent Wildlife Research Center, Laurel, MD.
  • R164 - Croxall, J.P. (ed.). 1991. Status and Conservation of the World's Seabirds: A Supplement. ICBP Technical Publication No. 11. Cambridge, UK.

Notes




Copyright Wetlands International 2012

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