BTO - Breeding Birds of the Wider Countryside: Canada Goose

CANADA GOOSE
Branta canadensis

Conservation listings

Europe: not evaluated (introduced)
UK: not listed (introduced)

Long-term trend

UK: rapid increase

Distribution maps

Maps and statistics from British and Irish
atlases can be viewed here.

Status summary

Canada Geese have increased rapidly, at a rate estimated at 9.9% per annum in southern Britain between the 1988-91 Atlas period and 1999 (Rehfisch et al. 2002). The WBS sample became large enough for annual monitoring in 1980, since when further, apparently accelerating increase on linear waterways has been recorded. Annual breeding-season monitoring in a wider range of habitats through BBS has shown similar strong increases in England and in the UK as a whole. Winter monitoring by WeBS shows a continuing long-term increase (Pollitt et al. 2003).

Table of population changes for Canada Goose

Source	Period (yrs)	Years	Plots (n)	Change (%)	Lower limit	Upper limit	Alert	Comment
WBS waterways	21	1981-2002	29	92	-8	590
	10	1992-2002	38	144	61	313
	5	1997-2002	39	66	31	135
BBS UK	9	1994-2003	311	136	108	169
BBS England	9	1994-2003	293	131	103	162

Productivity information is not currently available for this species


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This report should be cited as: Baillie, S.R., Marchant, J.H., Crick, H.Q.P., Noble, D.G., Balmer, D.E., Beaven, L.P., Coombes, R.H., Downie, I.S., Freeman, S.N., Joys, A.C., Leech, D.I., Raven, M.J., Robinson, R.A. and Thewlis, R.M. (2005) Breeding Birds in the Wider Countryside: their conservation status 2004. BTO Research Report No. 385. BTO, Thetford. (http://www.bto.org/birdtrends) Pages maintained by Susan Waghorn and Iain Downie: Last updated 18 January, 2006