Population and Distribution
Population Trend:
Regional Trends:
Distribution:
Local Atlases )
British Population Size:
Summer:
Winter:
First Record:
Conservation Status: AMBER
because
Recent Non-breeding Population Decline,
Previous Assessments: 2002-2007
GREEN
1996-2001
GREEN
Races of Concern: AMBER (Recent Decline)
Habitat Occupancy (in the Breeding Season):
Most frequent in:
Also common in:
And found in:
Relative Frequency in Each Habitat:
European Population Size:
Summer: Trend in Numbers )
Birds in Europe
Listed on the Appendices/Schedules of: WCA(II,III), WBD(II*,III*), Bern(III), Bonn(II), AEWA
Survey Results:
Breeding and Survival
Egg Size:
Egg Weight:
Number of Nest Records:
Clutch Size:
Incubation:
by the:
Female
Fledging:
as:
First Clutches Laid:
Number of Broods:
Trends in Breeding Productivity
Number Ringed: Annual Totals )
Adult Survival:
Juvenile Survival:
Age at First Breeding:
Typical Lifespan:
Maximum Recorded Age:
Summary of Ringing Recoveries
Biometrics
Ring Size:
Wing Length
Adult:
274.5 ± 12.4
Range
255 - 293 mm, N =2568
Juvenile:
268.0 ± 16.5
241 - 288 mm, N =1345
Male:
281.2 ± 10.3
265 - 295 mm, N =1476
Female:
265.3 ± 8.4
252 - 278 mm, N =1065
Weight
Adult:
1.21 ± 0.17
Range
0.95 - 1.51 kg , N =1859
Juvenile:
1.09 ± 0.16
0.85 - 1.34 kg , N =1005
Male:
1.27 ± 0.17
1.02 - 1.55 kg , N =1057
Female:
1.13 ± 0.15
0.90 - 1.39 kg , N =797
Source:
British Trust for Ornithology (2005) Ringing Scheme data
Other Names
Gaelic:
Welsh:
Danish:
Dutch:
Finnish:
French:
German:
Hungarian:
Icelandic:
Irish:
Italian:
Norwegian:
Polish:
Portuguese:
Spanish:
Swedish:
For More Information...
Books and Monographs:
Kear, J 2005 Ducks, geese and swans Oxford University Press
[598.48 KEA]
Cabot, D. 2009 Wildfowl Collins, London
See Also:
Find scientific papers on
Patuxent Bird Identification Infocenter
Other Names
Order:
Anseriformes
Google Scholar
or 
Scirus by clicking the icon