Sedge Warbler Acrocephalus schoenobaenus   [Linnaeus, 1758]

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

Order: Passeriformes Family: Sylviidae
BTO Codes: SW, SEDWA EURING No: 12430
Number in Britain: 260 thousand Territories (Summer)
Conservation Status:
UK: GREEN
European: Not a species of concern
Global: (Details)
Status in UK: (A)  Migrant Breeder, Passage Visitor
Subspecies: Monotypic
.
Length: 13 cm Wingspan: 19 cm Weight: M/F: 12 g    
Scientific name from: Gr.: akros=pointed + kephale=head and Gr.: skhoiniklos=a reed + baino=to walk
World Distribution: BREEDS: Eurasia (except e), WINTERS: tropical & s Africa
Habitat: Reedbed, marshes
Diet: Insects, some plant material in winter, often low down in dense vegetation
TitBit: The Sedge Warbler is good mimic, and introduces phrases into its song in random, so it never sings the same song twice; those males with the widest range phrases attract the most matings from females.  
Identification Tips:
  Images from IBC or search flickr
  Videos from IBC
  Sound from xeno-canto
Crossley ID photos BTO ID Workshop

Population and Distribution

Population Trend: BirdTrends   
Regional Trends: Scotland   England   English Regions
Distribution: Atlas Mapstore    BBS Maps
British Population Size:
    Summer: 260 thousand Territories in 2009
    First Record: 1766
    Latest Survey: Musgrove, A. et al. (2013) British Birds 106:64-100
    Conservation Status: GREEN
   Previous Assessments: 2002-2007 GREEN     1996-2001 GREEN  
   Races of Concern:
Habitat Occupancy (in the Breeding Season):
    Most frequent in: Reedbed, Along Rivers
    And found in: Estuaries, Lakes, Ponds
Relative Frequency in Each Habitat:
Migration routes: Map of foreign ringing recoveries  and summary map from Time to Fly (in pop-up windows)
Average Day of First Arrival: 16 Apr
European Population Size:
    Summer: 3.1 to 4.9 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: Bern(III), Bonn(II)
Survey Results: Results from BirdTrack

Breeding and Survival

Egg Size: 18 x 13 mm Egg Weight: 1.6 g (of which 6 % is shell)
Number of Nest Records: 86   (more would be welcome!)
Clutch Size: 5 eggs 5.02 ± 0.75 (2 - 7) N = 1446
Incubation: 14 days 13.48 ± 0.86 (12 - 15.5) N = 1446   by the: Female
Fledging: 13 - 14days 12.71 ± 1.13 (10.5 - 14.5) N = 2166 as: Altricial, naked
Source:
British Trust for Ornithology (2005) Nest Record Scheme data
First Clutches Laid: 23 May (7 May - 5 Jul)
Number of Broods: 1(2)
See trends in Breeding Productivity
Number Ringed: Annual Totals
Adult Survival: 0.224 ± 0.031       
Juvenile Survival: 0.250 (in First-Year)  
Age at First Breeding: 1 year Typical Lifespan: 2 years
Maximum Recorded Age: 8 years 8 months 8 days (set in 2001)
Read a summary of Ringing Recoveries

Biometrics

Ring Size: A
Wing Length Adult: 65.5 ± 1.9 Range 62 - 68 mm, N =22838
Juvenile: 64.8 ± 1.7 62 - 67 mm, N =44228
Male: 66.3 ± 1.6 64 - 69 mm, N =5545
Female: 64.2 ± 1.5 62 - 67 mm, N =4969
Weight Adult: 11.41 ± 1.06 Range 10.00 - 13.20 g , N =20329
Juvenile: 10.93 ± 1.31 9.60 - 12.70 g , N =41859
Male: 11.21 ± 0.76 10.10 - 12.50 g , N =4697
Female: 11.61 ± 1.22 10.00 - 13.90 g , N =4219
Source:
British Trust for Ornithology (2005) Ringing Scheme data

Other Names

 
Gaelic: Loiliseag Welsh: Telor yr Hesg
Danish: Sivsanger Dutch: Rietzanger
Finnish: Ruokokerttunen French: Phragmite des joncs
German: Schilfrohrsänger Hungarian: Foltos nádiposzáta
Icelandic: Síkjasöngvari Irish: Ceolaire Cíbe
Italian: Forapaglie Norwegian: Sivsanger
Polish: Rokitniczka Portuguese: Felosa-dos-juncos
Spanish: Carricerín común Swedish: Sävsångare
Local Names: English Mockbird

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
HBW account (subscription required)
BirdLife species page
Recent sightings and information from BirdGuides