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British Population Size:
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Summer:
240 thousand territories
in 1988-91
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Winter:
320 thousand individuals
in 2004-09
Note: Best estimate
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First Record:
Recorded in Medieval times
[Fossil evidence from
Middle Pleistocene, c. 500,000 yr ago]
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Conservation Status:
GREEN
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Previous Assessments:
2002-2007
GREEN
1996-2001
GREEN
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Races of Concern:
chloropus GREEN
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Habitat Occupancy (in the Breeding Season):
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Most frequent in:
Ponds
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Also common in:
Along Rivers
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And found in:
Lakes
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Relative Frequency in Each Habitat:
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Migration routes:
Map of foreign ringing recoveries
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European Population Size:
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Summer:
830 thousand to 1.6 million pairs
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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), WBD(II*), Bern(III)
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Breeding and Survival
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Egg Size:
43 x 31 mm
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Egg Weight:
22.3 g (of which 8 % is shell)
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Number of Nest Records:
473
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Clutch Size:
5 - 7 eggs
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6.28 ± 1.80 (2 - 13) N = 3263
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Incubation:
20- 22 days
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20.10 ± 1.57 (17 - 22.5) N = 3263
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by the:
Male + Female
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Fledging:
53 - 56days
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54.09 ± 2.73 (52.5 - 57.5) N = 2273
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as:
Precocial, downy
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Source:
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British Trust for Ornithology (2005) Nest Record Scheme data
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First Clutches Laid:
Unavailable
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Number of Broods:
2
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See trends in Breeding Productivity
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Number Ringed:
Annual Totals
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Adult Survival:
0.623
± 0.052
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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:
11 years 3 months 20 days (set in 1963)
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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
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Adult:
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182.5 ± 8.7
Range
140.0 - 215.0 mm, (N = 1192)
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Juvenile:
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179.7 ± 9.4
Range
134.0 - 220.0 mm, (N = 1232)
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Male:
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187.9 ± 5.8
Range
140.0 - 215.0 mm, (N = 523)
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Female:
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174.3 ± 5.2
Range
155.0 - 208.0 mm, (N = 252)
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Weight
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Adult:
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364.1 ± 68.08
Range
165.0 - 610.0 g , (N =591)
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Juvenile:
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308.9 ± 64.6
Range
110.0 - 525.0 . , (N =1013)
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Male:
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384.3 ± 64.83
Range
181.0 - 555.0 g , (N =295)
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Female:
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329.7 ± 56.05
Range
171.0 - 460.0 g , (N =114)
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Seasonal:
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Summer 349.7 ± 53.15 (N = 190)
Autumn 363.8 ± 63.65 (N = 312)
Winter 371.5 ± 60.88 (N = 980)
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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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Common Moorhen
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Gaelic:
Cearc-uisge
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Welsh:
Iâr Ddwr
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Danish:
Grønbenet rørhøne
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Dutch:
Waterhoen
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Finnish:
Liejukana
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French:
Poule d'eau
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German:
Teichhuhn
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Hungarian:
Vízityúk
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Icelandic:
Sefhæna
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Irish:
Cearc Uisce
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Italian:
Gallinella d’acqua
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Norwegian:
Sivhøne
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Polish:
Kokoszka zwyczajna
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Portuguese:
Galinha-d'água
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Spanish:
Polla de agua
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Swedish:
Rörhöna
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Local Names:Waterhen
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