Population information

Order name Ciconiiformes
Family name Ardeidae
Scientific name Ardea herodias Common name Great Blue Heron
Population name fannini
Breeding range NW North America Non-breeding range Most migrate to S of 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 1 0 0 -1 -1
WPE 2 0 0 -1 -1
WPE 3 0 0 6,500 6,500 [R281]
WPE 4 0 0 6,500 6,500 [R281]
WPE 5 1997 2007 9,500 11,000 Census based [S7612] [R1050]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1966 1991 DEC [R635]
WPE 2 1966 1996 STA [R565]
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 5 1997 2007 DEC [R1050]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 0 -1
WPE 3 2002 65
WPE 4 2006 65
WPE 5 2012 100

References

  • R635 - Trapp, J. (pers. comm.). 1993. Unpublished data from the North American Breeding Bird Survey 1966-1991 compiled by USFWS for IWRB.
  • 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.
  • R281 - Hafner, Heinz and Kushlan, James A. (eds.). (200X). Action Plan for Conservation of the Herons of the World. Heron Specialist Group. IUCN, Gland. Switzerland and Cambridge, UK and Station Biologique Tour du Valat, Arles, France. Vvvv = xx pp.
  • R1050 - COSEWIC. 2008. COSEWIC assessment and update status report on the Great Blue Heron fannini subspecies Ardea herodias fannini in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. vii + 39 pp.

Notes

  • S7612 - Estimate refers to Nesting adults.



Copyright Wetlands International 2012

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