Population and Distribution
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Population Trend:
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 Wider Countryside Report
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Regional Trends:
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England
English Regions
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Distribution:
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Atlas Maps
(Local Atlases)
BBS Maps
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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:
10th Century
[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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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
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Listed on the Appendices/Schedules of:
WCA(II), WBD(II*), Bern(III)
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Survey Results:
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BirdTrack
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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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Trends in Breeding Productivity
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Number Ringed:
547
(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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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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182.4 ± 8.7
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Range
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170 - 195 mm, N =1192
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Juvenile:
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179.2 ± 11.1
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166 - 192 mm, N =570
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Male:
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187.8 ± 5.8
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179 - 198 mm, N =523
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Female:
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174.2 ± 5.2
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167 - 182 mm, N =252
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Weight
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Adult:
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356.4 ± 68.08
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Range
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243.0 - 460.0 g , N =591
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Juvenile:
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318.3 ± 70.30
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200.0 - 439.0 g , N =309
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Male:
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373.6 ± 64.83
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243.0 - 465.0 g , N =295
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Female:
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319.0 ± 56.05
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235.0 - 407.0 g , N =114
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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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For More Information...
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Books and Monographs:
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Taylor, B. & van Perlo, B. 1998 Rails Pica Press, Sussex
[598.554 TAY]
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See Also:
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Find scientific papers on  Google Scholar
or  Scirus by clicking the icon
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Wikipedia entry
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BirdLife species page
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Recent sightings and information from BirdGuides
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All About Birds (Cornell Lab of Ornithology)
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Gough, G.A. et al. (1998) Patuxent Bird Identification Infocenter
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State of the Nations Birds by Chris Mead
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