Population information

Order name Charadriiformes
Family name Haematopodidae
Scientific name Haematopus chathamensis Common name Chatham Oystercatcher
Population name Chatham Island
Breeding range Chatham Island Non-breeding range
Red List Category Endangered
Ramsar regions Oceania
Notes This population is given full specific status in BirdLife International (2005).

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 3 1999 1999 140 150 [R68]
WPE 4 0 0 310 325 [S1412] [R457]
WPE 1 0 0 1 100 [R534]
WPE 2 0 0 1 100 [R534]
WPE 5 2007 2007 313 351 Census based [S6838] [R1129]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 1996 2007 INC Good [T4319] [R1129]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 1
WPE 4 2006 1
WPE 1 1994 1
WPE 2 1997 1
WPE 5 2012 3

References

  • R68 - BirdLife International. (2000). Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife international
  • R457 - Moore, P. 2005. Chatham Island Oystercatcher population responds to conservation management. Abstracts of the 5th Australasian Wader Studies Group conference, Nelson, New Zealand, December 2005. To be published in Stilt.
  • R534 - Powlesland, R. (pers. comm.). 1993. New Zealand Department of Conservation unpublished data.
  • R1129 - Moore, P.J. 2008. The recovering population of the Chatham Island oystercatcher (Haematopus chathamensis). Notornis 55: 20-31.

Notes

  • S1412 - 463: A minimum count in 2004 of 266 birds on most of the coast of four islands in the Chathams group represented a population of 310-325 birds.
  • S6838 - Intensive management has resulted in total population increasing, then levelling off at about 313?351 birds in 2006.
  • T4319 - Intensive management has resulted in total population increasing, then levelling off at about 313?351 birds in 2006.



Copyright Wetlands International 2012

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