Population and Distribution
Population Trend:
Regional Trends:
No regional trends available
Distribution:
Local Atlases )
British Population Size:
Summer:
First Record:
Conservation Status: RED
because
Recent Breeding Population Decline,
Previous Assessments: 2002-2007
RED
1996-2001
AMBER
Races of Concern: RED (Recent Decline)
Habitat Occupancy (in the Breeding Season):
Most frequent in:
Relative Frequency in Each Habitat:
Average Day of First Arrival:
European Population Size:
Summer: Trend in Numbers )
Birds in Europe
Listed on the Appendices/Schedules of: Bern(III), Bonn(II)
Survey Results:
Breeding and Survival
Egg Size:
Egg Weight:
Number of Nest Records:
Clutch Size:
5.55 ± 0.85 (3 - 7) N = 119
Incubation:
14.07 ± 0.59 (13 - 15.5) N = 119
by the:
Male + Female
Fledging:
11.77 ± 0.93 (10 - 13) N = 183
as:
Source:
British Trust for Ornithology (2005) Nest Record Scheme data
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:
63.8 ± 1.7
Range
61 - 67 mm, N =790
Juvenile:
64.2 ± 1.6
62 - 67 mm, N =2655
Male:
64.6 ± 1.6
62 - 67 mm, N =221
Female:
63.3 ± 1.6
61 - 66 mm, N =95
Weight
Adult:
13.26 ± 1.13
Range
11.50 - 15.20 g , N =725
Juvenile:
13.08 ± 1.09
11.50 - 15.00 g , N =2601
Male:
13.05 ± 0.93
11.70 - 14.70 g , N =193
Female:
13.56 ± 1.46
11.50 - 16.20 g , N =85
Source:
British Trust for Ornithology (2005) Ringing Scheme data
Other Names
Common Grasshopper Warbler
Gaelic:
Welsh:
Danish:
Dutch:
Finnish:
French:
German:
Hungarian:
Icelandic:
Irish:
Italian:
Norwegian:
Polish:
Portuguese:
Spanish:
Swedish:
Local Names:
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