Population information

Order name Ciconiiformes
Family name Ardeidae
Scientific name Ardea herodias Common name Great Blue Heron
Population name herodias, W North America, N Mexico
Breeding range W North America, N Mexico Non-breeding range Some migrate to S of breeding range
Red List Category Least Concern
Ramsar regions North America
Notes Sometimes ascribed to treganzai. (WPE4)

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 -1 -1
WPE 4 0 0 -1 -1
WPE 5 0 0 -1 -1 [S7610]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1966 1991 STA [R635]
WPE 2 1966 1996 INC [R565]
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 5 0 0 Unknown No idea

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 0 -1
WPE 3 0 -1
WPE 4 0 -1
WPE 5 0 -1

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 Unpublished data from the North American Breeding Bird Survey 1966-1991 compiled by USFWS for IWRB.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.

Notes

  • S7610 - The population estimate for C & NE N America includes the estimate for this population and also the W N Americas population.



Copyright Wetlands International 2012

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