Population information

Order name Ciconiiformes
Family name Ardeidae
Scientific name Egretta thula Common name Snowy Egret
Population name brewsteri
Breeding range W USA, Baja California Non-breeding range Central America
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 1 1993 1993 100,000 1,000,000 [R665]
WPE 2 0 0 100,000 100,000 [R667]
WPE 3 2002 2002 100,000 1,000,000 [R604]
WPE 4 2006 2006 100,000 1,000,000 [R668]
WPE 5 2006 2006 100,000 1,000,000 Best guess [R668]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1966 1991 INC [R635]
WPE 2 1966 1996 INC [R565]
WPE 3 1966 2000 INC [R563]
WPE 4 1966 2000 INC [R563]
WPE 5 1966 2000 INC [R563]

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 10000

References

  • R665 - Unpublished information provided by IWRB Specialist Research Groups
  • R635 - Trapp, J. (pers. comm.). 1993. Unpublished data from the North American Breeding Bird Survey 1966-1991 compiled by USFWS for IWRB.
  • R667 - Unpublished information supplied by Wetlands International Specialist Groups, 1997.
  • 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.
  • R604 - Specialist]] Unpublished information supplied by Wetlands International Specialist Groups, 2002.
  • 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.
  • R668 - Unpublished information supplied by Wetlands International Specialist Groups, 2006.

Notes




Copyright Wetlands International 2012

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