Jackdaw Corvus monedula   [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: Corvidae
BTO Codes: JD, JACKD EURING No: 15600
Number in Britain: 1.3 million Pairs (Summer)
Conservation Status:
UK: GREEN
European: Not a species of concern
Global: (Details)
Status in UK: (A)  Resident Breeder, Winter Visitor
Subspecies: spermologus (RW), monedula (W), soemmerringii recorded in Britain (of 4 subsp. in the world)
.
Length: 34 cm Wingspan: 70 cm Weight: M/F: 220 g    
Scientific name from: L.: corvus=the raven and L.: monedula=the jackdaw
World Distribution: Eurasia, nw Africa
Habitat: Open woodland, farmland, towns
Diet: Invertebrates, fruit, seeds, carrion, occ. Small vertebrates or eggs; nestlings mostly invertebrates
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   Wales   England   English Regions
Distribution: Atlas Mapstore    BBS Maps
British Population Size:
    Summer: 1.3 million Pairs in 2009
    First Record: Recorded in Medieval times [Fossil evidence from Devensian (last) glaciation, 10-120,000 yr ago]
    Latest Survey: Newson, S.E. et al. (2008) Journal of Applied Ecology 45:1330-1338
    Conservation Status: GREEN
   Previous Assessments: 2002-2007 GREEN     1996-2001 GREEN  
   Races of Concern: spermologus GREEN , monedula GREEN
Habitat Occupancy (in the Breeding Season):
    Most frequent in: Villages
    And found in: Coastal Habitat, Pasture Farmland, Towns, Deciduous Wood
Relative Frequency in Each Habitat:
Migration routes: Map of foreign ringing recoveries
European Population Size:
    Summer: 4.2 to 10 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(III), WBD(II*)
Survey Results: Results from BirdTrack
Results from Garden BirdWatch

Breeding and Survival

Egg Size: 35 x 25 mm Egg Weight: 11.1 g (of which 7 % is shell)
Number of Nest Records: 265
Clutch Size: 4 - 5 eggs 4.45 ± 1.01 (2 - 9) N = 1380
Incubation: 20 days 19.43 ± 1.99 (16 - 23.5) N = 1380   by the: Female
Fledging: 32 - 33days 31.85 ± 1.51 (28 - 34.5) N = 2484 as: Altricial, downy
Source:
British Trust for Ornithology (2005) Nest Record Scheme data
First Clutches Laid: 30 Mar (12 Mar - 18 Apr)
Number of Broods: 1
See trends in Breeding Productivity
Number Ringed: Annual Totals
Adult Survival: 0.694 ± 0.059       
Juvenile Survival: 0.397 (to age 2 )  
Age at First Breeding: 2 years Typical Lifespan: 5 years
Maximum Recorded Age: 17 years 0 months 22 days (set in 1980)
Read a summary of Ringing Recoveries

Biometrics

Ring Size: E
Wing Length Adult: 234.0 ± 10.2 Range 217 - 248 mm, N =1088
Juvenile: 223.8 ± 15.6 187 - 241 mm, N =100
Male: 238.0 ± 11.0 220 - 249 mm, N =274
Female: 229.8 ± 9.7 212 - 245 mm, N =308
Weight Adult: 231.8 ± 21.01 Range 196.0 - 265.0 g , N =764
Juvenile: 210.0 ± 32.28 151.0 - 259.0 g , N =83
Male: 241.8 ± 19.55 210.0 - 270.0 g , N =195
Female: 225.5 ± 17.73 198.0 - 251.0 g , N =211
Source:
British Trust for Ornithology (2005) Ringing Scheme data

Other Names

Eurasian / Western Jackdaw
Gaelic: Cathag Welsh: Jac-y-do
Danish: Allike Dutch: Kauw
Finnish: Naakka French: Choucas des tours
German: Dohle Hungarian: Csóka
Icelandic: Dvergkráka Irish: Cág
Italian: Taccola Norwegian: Kaie
Polish: Kawka zwyczajna Portuguese: Gralha-de-nuca-cinzenta
Spanish: Grajilla Swedish: Kaja

For More Information...

Books and Monographs:
   Cocker, M. 2007 Crow country Jonathon Cape, London [598.96 COC]
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