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Garden Warbler Sylvia borin   [Boddaert, 1783]
Other Names Trends & Distribution Breeding & Survival Biometrics Books & Links
Order: Passeriformes Family: Sylviidae
BTO Codes: GW , GARWA EURING No: 12760
Number in Britain: 190 thousand territories (Summer)
Conservation Status:
UK: GREEN
European: Not a species of concern
Global: Least Concern
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Status in UK: (A)  Migrant Breeder, Passage Visitor
Subspecies: borin recorded in Britain (of 2 subsp. in the world)
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Length: 14 cm Wingspan: 22 cm Weight: M/F: 19 g    
Scientific name from: L.: silva=a wood and Italian (Genovese) name for a type of warbler
World Distribution: BREEDS: Europe, w Asia, WINTERS: tropical & s Africa
Habitat: Forest edge, scrub, towns
Diet: Summer, insects, otherwise fruit mainly in scrub
TitBit: In Britain, the Garden Warbler feeds mainly on insects (the chicks need a high protein diet), but in autumn it switches to fruit (like brambles and elderberry) which is high in energy to fuel iits migration, indeed in Portugal it is known as the 'fig-warbl er'  
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Population and Distribution
Population Trend: Wider Countryside Report
Regional Trends: England   English Regions
Distribution: Atlas Maps    (Help with the New Atlas)    BBS Maps
British Population Size:
    Summer: 190 thousand territories in 2000
    First Record: 1676 [Fossil evidence from Hoxnian (penultimate) interglacial, c. 200,000 yr ago]
Habitat Occupancy (in the Breeding Season):
    Most frequent in: Scrub
    Also common in: Deciduous Wood
    And found in: Coniferous Wood
Relative Frequency in Each Habitat:
Average Day of First Arrival: 20 Apr
European Population Size:
    Summer: 8.5 to 16 million pairs   (Trend in Numbers)
Population Assesment from Birds in Europe
Distribution in Europe
Listed on the Appendices/Schedules of: Bern(III), Bonn(II)
Survey Results: BirdTrack
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Breeding and Survival
Egg Size: 20 x 15 mm Egg Weight: 2.2 g (of which 6 % is shell)
Number of Nest Records: 61   (more would be welcome!)
Clutch Size: 4 - 5 eggs 4.32 ± 0.71 (2 - 6) N = 579
Incubation: 11 - 13 days 11.30 ± 1.22 (10 - 14) N = 579 by the: Male + Female
Fledging: 11 - 13 days 11.52 ± 1.19 (9 - 13) N = 869 as: Altricial, naked
Source:
British Trust for Ornithology (2005) Nest Record Scheme data
First Clutches Laid: 21 May (8 May - 21 Jun)
Number of Broods: 1(2)
Trends in Breeding Productivity

Number Ringed: 4513
Adult Survival: 0.5 Juvenile Survival: 0.265 (in First-Year)
Age at First Breeding: 1 year Typical Lifespan: 2 years
Maximum Recorded Age: 8yr1m   (Germany: 14yr 2m)
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Biometrics
Ring Size: A (pulli B)
Wing Length Adult: 77.9 ± 2.0 Range 75 - 81 mm, N =6566
Juvenile: 77.0 ± 2.1 74 - 81 mm, N =8124
Male: 78.0 ± 2.1 75 - 81 mm, N =1017
Female: 77.7 ± 1.9 75 - 81 mm, N =1859
Weight Adult: 17.24 ± 1.62 Range 15.20 - 20.40 g , N =5834
Juvenile: 18.48 ± 2.35 15.40 - 23.00 g , N =7512
Male: 16.69 ± 1.07 15.20 - 18.50 g , N =894
Female: 17.51 ± 1.59 . 15.40 - 20.50 g , N =1612
Source:
British Trust for Ornithology (2005) Ringing Scheme data
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Other Names
Gaelic: Ceileiriche-gàraidh Welsh: Telor yr Ardd
Danish: Havesanger Dutch: Tuinfluiter
Finnish: Lehtokerttu French: Fauvette des jardins
German: Gartengrasmücke Hungarian: Kerti poszáta
Icelandic: Garðsöngvari Irish: Ceolaire Garraí
Italian: Beccafico Norwegian: Hagesanger
Polish: Gakówka Portuguese: Felosa-das-figueiras
Spanish: Curruca mosquitera Swedish: Trädgårdssångare
Local Names: Pettychap
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For More Information...
Books and Monographs:
   Garcia, E. 1989 The Blackcap and the Garden Warbler Shire Publications, Princes Risborough [Jour: S]
See Also:
Wikipedia entry
State of the Nations Birds by Chris Mead
Recent sightings and information from BirdGuides.com
Selected scientific papers published 1980-2005
Find more papers on Google Scholar
Find more papers on Scirus

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Email: birdfacts@bto.org

These data should be cited as:
Robinson, R.A. (2005) BirdFacts: profiles of birds occurring in Britain & Ireland (v1.21, Jun 2008). BTO Research Report 407, BTO, Thetford (http://www.bto.org/birdfacts)

 

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