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British Population Size:
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Winter:
440 thousand individuals
in 2004-09
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First Record:
Recorded in Medieval times
[Fossil evidence from
Middle Pleistocene, c. 500,000 yr ago]
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Latest Survey:
Holling, M. & RBBP 2011 British Birds 104:476-537
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Conservation Status:
AMBER
because
Localised Non-breeding Population,
Important Non-breeding Population
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Previous Assessments:
2002-2007
AMBER
1996-2001
AMBER
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Races of Concern:
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|
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Habitat Occupancy (in the Breeding Season):
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No habitat data from BBS
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|
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Migration routes:
Map of foreign ringing recoveries
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European Population Size:
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Summer:
Unavailable
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Population Assesment from Birds in Europe
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Distribution in Europe mapped by the EBCC Atlas
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Listed on the Appendices/Schedules of:
WCA(II,III), WBD(II*,III*), Bern(III), Bonn(II), AEWA
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Breeding and Survival
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Egg Size:
55 x 39 mm
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Egg Weight:
44.0 g (of which 8 % is shell)
|
|
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Number of Nest Records:
4
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Clutch Size:
8 - 9 eggs
|
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Incubation:
24- 25 days
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by the:
Female
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Fledging:
40 - 45days
|
|
as:
Precocial, downy
|
|
|
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First Clutches Laid:
Unavailable
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Number of Broods:
1
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Number Ringed:
Annual Totals
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Adult Survival:
0.530
|
Juvenile Survival:
No data
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Age at First Breeding:
1
year
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Typical Lifespan:
3
years
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Maximum Recorded Age:
34 years 7 months 0 days (set in 1996)
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Read a summary of Ringing Recoveries
|
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Biometrics
|
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Ring Size:
F*
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Wing Length
|
Adult:
|
258.9 ± 10.4
Range
204.0 - 292.0 mm, (N = 4667)
|
|
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Juvenile:
|
253.6 ± 10.1
Range
206.0 - 296.0 mm, (N = 522)
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Male:
|
265.3 ± 6.8
Range
206.0 - 292.0 mm, (N = 2820)
|
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Female:
|
249.3 ± 6.5
Range
204.0 - 292.0 mm, (N = 1846)
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Weight
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Adult:
|
731.5 ± 85.65
Range
253.0 - 1125 g , (N =4171)
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Juvenile:
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632.7 ± 81.3
Range
410.0 - 895.0 . , (N =432)
|
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|
Male:
|
763.6 ± 77.03
Range
400.0 - 1125 g , (N =2513)
|
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Female:
|
684.4 ± 75.02
Range
253.0 - 1025 g , (N =1657)
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Seasonal:
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Summer 665.7 ± 72.85 (N = 15)
Autumn 754.2 ± 85.47 (N = 961)
Winter 729.2 ± 91.09 (N = 6354)
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Source:
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British Trust for Ornithology (2005) Ringing Scheme data
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Other Names
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Eurasian Wigeon
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Gaelic:
Glas-lach
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Welsh:
Chwiwell
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Danish:
Pibeand
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Dutch:
Smient
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Finnish:
Haapana
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French:
Canard siffleur
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German:
Pfeifente
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Hungarian:
Fütyülo réce
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Icelandic:
Rauðhöfðaönd
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Irish:
Rualacha
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Italian:
Fischione
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Norwegian:
Brunnakke
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Polish:
Swistun zwyczajny
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Portuguese:
Piadeira
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Spanish:
Anade silbón
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Swedish:
Bläsand
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Local Names:Whistler / Half Duck
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Collective Noun:Company
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