Dartford Warbler Sylvia undata   [Boddaert, 1783]

Jump to: Other Names Trends & Distribution Breeding & Survival Biometrics Books & Links

For details point at or click the button; for sources point at the button

   Page updated:16-January-2013

Order: Passeriformes Family: Sylviidae
BTO Codes: DW, DARWA EURING No: 12620
Number in Britain: 3200 territories (Summer)
Conservation Status:
UK: AMBER
European: 2 Concern, most in Europe; Depleted
Global: Near Threatened (Details)
Links to: Images   Videos   Sound  
Status in UK: (A)  Resident Breeder
Subspecies: dartfordiensis recorded in Britain (of 3 subsp. in the world)
.
Length: 12 cm Wingspan: 16 cm Weight: M/F: 10 g    
Scientific name from: L.: silva=a wood and L.: undatus=wavy (from unda=a wave)
World Distribution: w Europe, nw Africa
Habitat: Scrub, heath
Diet: Arthropods, occ. fruit, mainly in low scrub
TitBit: Really a bird of Mediterranean climes, the Dartford Warbler suffers extremely from cold winters, following the severe winters of 1961/63, the breeding population collapsed from 450 pairs to just 10.  

Population and Distribution

Population Trend: No population trend available
Distribution: No distribution maps available
British Population Size:
    Summer: 3214 territories in 2006
    First Record: 1773
    Latest Survey: Wotton, S. et al. (2009) British Birds 102:230-246
    Conservation Status: AMBER because Species of European Concern, Localised Breeding Population,
   Previous Assessments: 2002-2007 AMBER     1996-2001 RED  
   Races of Concern: dartfordiensis AMBER (Rare or Localised)
Habitat Occupancy (in the Breeding Season):
    No habitat data from BBS
European Population Size:
    Summer: 1.9 to 3.7 million pairs   (Trend in Numbers)
Population Assesment from Birds in Europe
Distribution in Europe mapped by the EBCC Atlas
Listed on the Appendices/Schedules of: WCA(I,IV),WBD(I), Bern(III), Bonn(II)
Survey Results: Results from BirdTrack

Breeding and Survival

Egg Size: 17 x 13 mm Egg Weight: 1.4 g (of which 6 % is shell)
Number of Nest Records: 12
Clutch Size: 4 eggs
Incubation: 12- 14 days   by the: Female (occ. Male)
Fledging: 10 - 14days as: Altricial, naked
First Clutches Laid: Unavailable
Number of Broods: 2(3)
Number Ringed: Annual Totals
Adult Survival: 0.500 ± 0.083       
Juvenile Survival: No data
Age at First Breeding: Typical Lifespan: No data
Maximum Recorded Age: 3 years 8 months 8 days (set in 1986)
Read a summary of Ringing Recoveries

Biometrics

Ring Size: A
Wing Length Adult: 53.4 ± 1.5     Range 49.0 - 57.0 mm, (N = 198)
Juvenile: 52.7 ± 1.3     Range 50.0 - 59.0 mm, (N = 238)
Male: 53.9 ± 1.4     Range 50.0 - 57.0 mm, (N = 137)
Female: 52.6 ± 1.4     Range 49.0 - 56.0 mm, (N = 53)
Weight Adult: 9.46 ± 0.67 Range 7.70 - 11.90 g , (N =173)
Juvenile: 9.4 ± 0.6 Range 7.9 - 11.0 . , (N =235)
Male: 9.39 ± 0.60 Range 7.70 - 11.60 g , (N =120)
Female: 9.56 ± 0.81 Range 7.80 - 11.90 g , (N =45)
Seasonal: Summer 9.58 ± 0.77 (N = 54)   Autumn 9.73 ± 0.63 (N = 44)   Winter 9.49 ± 0.56 (N = 209)  
Source: British Trust for Ornithology (2005) Ringing Scheme data

Other Names

 
Gaelic: Welsh: Telor Dartford
Danish: Provencesanger Dutch: Provençaalse grasmus
Finnish: Ruskokerttu French: Fauvette pitchou
German: Provencegrasmücke Hungarian: Bujkáló poszáta
Icelandic: Busksöngvari Irish: Ceolaire Fraoigh
Italian: Magnanina Norwegian: Provencesanger
Polish: Pokrzewka kasztanowata Portuguese: Felosa-do-mato
Spanish: Zarcero común Swedish: Provencesĺngare
Local Names:Furze Wren

For More Information...

Books and Monographs:
No books written recently
See Also:
Find scientific papers on Google Scholar or Scirus by clicking the icon
Wikipedia entry
BirdLife species page
Recent sightings and information from BirdGuides
Read State of the Nations Birds by Chris Mead