Population information

Order name Gruiformes
Family name Rallidae
Scientific name Zapornia atra Common name Henderson Crake
Population name Henderson: Pitcairn Islands
Breeding range Henderson: Pitcairn Islands Non-breeding range
Red List Category Vulnerable
Ramsar regions Oceania
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 1993 1993 6,000 6,000 [R138]
WPE 3 1999 1999 6,200 6,200 [R68]
WPE 4 2005 2005 6,200 6,200 [R64]
WPE 1 0 0 -1 -1
WPE 5 2005 2005 6,200 6,200 [R64]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 2 1970 1992 STA [R138]
WPE 3 1987 1992 STA [R68]
WPE 4 1987 2003 STA [R64]
WPE 1 0 0 Unknown
WPE 5 1987 2003 STA [R64]

Population 1% level

Publication Yearset 1 percent Note
WPE 2 1997 60
WPE 3 2002 60
WPE 4 2006 60
WPE 1 0 -1
WPE 5 2012 60

References

  • R138 - Collar, N.J., Crosby, M.J. and Stattersfield, A.J. 1994. Birds to Watch 2. The World List of Threatened Birds. BirdLife Conservation series No. 4. BirdLife International, Cambridge, UK. 407 pp.
  • R68 - BirdLife International. (2000). Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife international
  • R64 - BirdLife International. 2005. Threatened birds of the world 2005. Species factsheets available at?www.birdlife.org

Notes




Copyright Wetlands International 2012

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