Population information

Order name Charadriiformes
Family name Laridae
Scientific name Larus bulleri Common name Black-billed Gull
Population name New Zealand
Breeding range New Zealand Non-breeding range
Red List Category Endangered
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 3 1999 1999 96,000 96,000 [R68]
WPE 4 2005 2005 96,000 96,000 [R64]
WPE 1 0 0 100,000 1,000,000 [R165]
WPE 2 0 0 100,000 1,000,000 [R165]
WPE 5 2005 2005 96,000 96,000 [R64]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 3 1980 2000 DEC [R68]
WPE 4 1980 2000 DEC [T1493] [R64]
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 5 1980 2000 DEC [T5110] [R64]

Population 1% level

Publication Yearset 1 percent Note
WPE 3 2002 960
WPE 4 2006 960
WPE 1 0 -1
WPE 2 0 -1
WPE 5 2012 960

References

  • 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
  • R165 - Croxall, J.P., Evans, P.G.H. and Schreiber, R.W. (eds.). 1984. Status and Conservation of the World's Seabirds. ICBP Technical Publication No. 2. Cambridge, UK.

Notes

  • T1493 - Recent surveys suggest a rapid decline throughout the breeding range, equivalent to an overall decline of more than 50% in 32 years (three generations). It has therefore been uplisted to Endangered (65).
  • T5110 - Recent surveys suggest a rapid decline throughout the breeding range, equivalent to an overall decline of more than 50% in 32 years (three generations). It has therefore been uplisted to Endangered (65).



Copyright Wetlands International 2012

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