Population information

Nom ordre Anseriformes
Nom famille Anatidae
Nom scientifique Cygnus olor Nom courant Mute Swan
Nom population Britain
Aire de reproduction Britain Aire de non-reproduction
Catégorie de la Liste Rouge Least Concern
Regions Ramsar Europe
Notes These populations were treated as a single larger population WPE1. (WPE2)

Réseau de conservation

Réseau de conservation Notes
EUBD
Note:

Taille de population

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 2 0 0 25,000 25,000 No quality assessment [R180]
WPE 4 0 0 31,700 31,700 No quality assessment [R685]
WPE 3 0 0 37,500 37,500 No quality assessment [R375]
WPE 5 0 0 31,700 31,700 No quality assessment [R685]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 2 1980 1990 INC No quality assessment [R180]
WPE 4 1994 1999 INC/STA No quality assessment [T1987] [R374]
WPE 3 1994 1999 INC No quality assessment [R375]
WPE 5 1994 1999 INC/STA No quality assessment [T3963] [R374]

Population 1% level

Publication Yearset 1 percent Note
WPE 2 1997 250
WPE 4 2006 320
WPE 3 2002 380
WPE 5 2012 320

References

  • R180 - Delany, S.N., Greenwood, J. and Kirby, J.S. 1992. National Mute Swan Survey 1990. Unpubl. Rep. to JNCC.
  • R685 - Ward, R.M., Cranswick, P., Kershaw, M., Austin, G. et al. 2005. Results of National Mute Swan Census 2002. First working Draft, WWT, Slimbridge. 34pp.
  • R374 - Kershaw, M. and Cranswick, P.A. 2003. Numbers of wintering waterbirds in Great Britain 1994/95-1998/99: I. Wildfowl and selected waterbirds. Biological Conservation 111: 91-104.
  • R375 - Kershaw, M. and P.A. Cranswick. 2002 in press. Numbers of wildfowl and selected waterbirds wintering in Great Britain. Biological Conservation.

Notes

  • T1987 - Population increased in 1990s (380) but appears to have levelled off in 2000s (693).
  • T3963 - Population increased in 1990s (380) but appears to have levelled off in 2000s (693).



Copyright Wetlands International 2012

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