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Marsh Warbler Acrocephalus palustris   [Bechstein, 1798]
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Order: Passeriformes Family: Sylviidae
BTO Codes: MW, MARWA EURING No: 12500
Number in Britain: 50 records/year
Conservation Status:
UK: RED
European: Not a species of concern
Global: Least Concern ( Details )
Links to: Images   Videos   Sound  
Status in UK: (A)  Scarce Migrant Breeder, Passage Visitor
Subspecies: Monotypic
.
Length: 13 cm Wingspan: 20 cm Weight: M/F: 13 g    
Scientific name from: Gr.: akros=pointed + kephale=head and L.: palus=a marsh
World Distribution: BREEDS: c Europe, Near East, WINTERS: e Africa
Habitat: Scrub, grassland
Diet: Insects and spiders also snails and occ. berries
TitBit: Like many other Acrocephalus warblers, the Marsh warbler is a good songster, and an individual bird can sing for extended periods, sometimes up to an hour continuously, and mimics the songs of birds from both its breeding and wintering range.  

Population and Distribution

Population Trend: No population trend available
Distribution: Atlas Maps    (Local Atlases)   
British Population Size:
    Passage: 50 individuals
    First Record: 1871
    Latest Survey: Holling, M. & RBBP 2011 British Birds 104:476-537
    Conservation Status: RED because Recent Breeding Population Decline,
   Previous Assessments: 2002-2007 RED     1996-2001 RED  
   Races of Concern:
UK Biodiversity Action Plan (Lead Partner: RSPB, Wildlife Trusts)
Habitat Occupancy (in the Breeding Season):
    No habitat data from BBS
European Population Size:
    Summer: 2.2 to 3.8 million pairs   (Trend in Numbers)
Population Assesment from Birds in Europe
Distribution in Europe
Listed on the Appendices/Schedules of: WCA(I,IV), Bern(III), Bonn(II)
Survey Results:

Breeding and Survival
Egg Size: 19 x 14 mm Egg Weight: 1.9 g (of which 6 % is shell)
Number of Nest Records: 1
Clutch Size: 4 - 5 eggs
Incubation: 12- 14 days   by the: Male + Female
Fledging: 10 - 11days as: Altricial, naked
First Clutches Laid: Does not breed in Britain, or too few Nest Records
Number of Broods: 1
Number Ringed: 23 (Annual Totals)
Adult Survival: No data
Juvenile Survival: No data
Age at First Breeding: Typical Lifespan: No data
Maximum Recorded Age: 7 years 10 months 22 days (set in 1993)
Summary of Ringing Recoveries       

Biometrics
Ring Size: A
Wing Length Adult: 70.5 ± 1.7 Range 67 - 73 mm, N =53
Juvenile: 68.3 ± 1.6 66 - 71 mm, N =21
Male: Insufficient Data
Female: Insufficient Data
Weight Adult: 12.87 ± 1.10 Range 11.40 - 15.00 g , N =49
Juvenile: 12.70 ± 2.37 9.75 - 17.55 g , N =20
Male: Insufficient Data
Female: Insufficient Data
Source:
British Trust for Ornithology (2005) Ringing Scheme data

Other Names
 
Gaelic: Ceileiriche-fčithe Welsh: Telor y Gwerni
Danish: Kćrsanger Dutch: Bosrietzanger
Finnish: Luhtakerttunen French: Rousserolle verderolle
German: Sumpfrohrsänger Hungarian: Énekes nádiposzáta
Icelandic: Seljusöngvari Irish: Ceolaire Corraigh
Italian: Cannaiola verdognola Norwegian: Myrsanger
Polish: Lozówka Portuguese: Felosa-palustre
Spanish: Carricero políglota Swedish: Kärrsĺngare

For More Information...
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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
State of the Nations Birds by Chris Mead