Population information

Order name Ciconiiformes
Family name Ardeidae
Scientific name Ixobrychus exilis Common name Least Bittern
Population name exilis
Breeding range SE Canada & E USA, W USA to Central America, Caribbean Non-breeding range S USA to N South America
Red List Category Least Concern
Ramsar regions Neotropics 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 2000 2000 128,000 128,000 [R687]
WPE 4 2000 2000 128,000 128,000 [R687]
WPE 5 2000 2000 128,000 128,000 Best guess [S7788] [R687]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1966 1991 STA [R635]
WPE 2 0 0 Unknown
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 2002 1300
WPE 4 2006 1300
WPE 5 2012 1300

References

  • R635 - Trapp, J. (pers. comm.). 1993. Unpublished data from the North American Breeding Bird Survey 1966-1991 compiled by USFWS for IWRB.
  • R687 - Waterbird Conservation for the Americas. 2001. Continental Marshbird Conservation Planning Workshop, August 2001, Denver, Colorado.

Notes

  • S7788 - No new data. 4,500 (1,500 Bpairs) in Canada (COSEWIC. 2009).



Copyright Wetlands International 2012

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