Population information

Order name Anseriformes
Family name Anatidae
Scientific name Anas chlorotis Common name Brown Teal
Population name New Zealand
Breeding range North Island, SW South Island New Zealand Non-breeding range
Red List Category Near Threatened
Ramsar regions Oceania
Notes Treated as a full species after Daugherty et al. (1999).

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 1993 1993 1,500 2,000 [R115]
WPE 2 1993 1993 1,500 2,000 [R115]
WPE 3 1988 1999 1,425 1,625 [R511]
WPE 4 2005 2005 1,425 1,625 [S664] [R64]
WPE 5 2005 2005 1,420 1,630 [S6573] [R64]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 1980 1990 DEC [R115]
WPE 2 1980 1990 DEC [R115]
WPE 3 1990 2000 DEC [R68]
WPE 4 1990 2004 DEC [R64]
WPE 5 1990 2004 INC [R1257]

Population 1% level

Publication Yearset 1 percent Note
WPE 1 1994 18
WPE 2 1997 -1
WPE 3 2002 15
WPE 4 2006 15
WPE 5 2012 15

References

  • R115 - Callaghan, D.A. and Green, A.J. 1993. Wildfowl at risk, 1993. Wildfowl 44: 149-169.
  • R511 - Parrish, R. and Williams, M. (2001) Decline of brown teal (Anas chlorotis) in Northland, New Zealand, 1988-99. Notornis 48: 131-136
  • 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
  • R1257 - BirdLife International. 2012n .Species factsheet: Anas chlorotis. Downloaded from http://www.birdlife.org.

Notes

  • S664 - 517 estimate a reduction in Northland population from 300 to 126 since publication of 65. 325 presents an estimate of 700-1200 on Great Barrier Island and < 400 in Northland in 2004.
  • S6573 - Parrish & Williams (2001) estimate a reduction in Northland population from 300 to 126 since publication of BirdLife International 2005. http://www.brownteal.com presents an estimate of 700-1200 on Great Barrier Island and < 400 in Northland in 2004.



Copyright Wetlands International 2012

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