British Population Size:
Summer:
3.3 million territories
in 2000
 
First Record:
Recorded in Anglo-Saxon times
Conservation Status:
GREEN
Previous Assessments:
2002-2007
GREEN
1996-2001
GREEN
Races of Concern:
obscurus AMBER (Important Population), caeruleus GREEN
Habitat Occupancy (in the Breeding Season):
Most frequent in:
Deciduous Wood
Also common in:
Pasture Farmland, Villages, Towns
And found in:
Scrub, Arable Farmland
Relative Frequency in Each Habitat:
European Population Size:
Summer:
19 to 42 million pairs
Population Assesment from Birds in Europe
Distribution in Europe mapped by the EBCC Atlas
Listed on the Appendices/Schedules of:
Bern(III)
Breeding and Survival
Egg Size:
16 x 12 mm
Egg Weight:
1.1 g (of which 6 % is shell)
Number of Nest Records:
4000
Clutch Size:
8 - 10 eggs
9.06 ± 2.14 (2 - 16) N = 2875
Incubation:
13- 15 days
13.88 ± 1.31 (12 - 16) N = 2875
by the:
Female
Fledging:
18 - 21days
19.28 ± 2.16 (15 - 22.5) N = 4391
as:
Altricial, downy
Source:
British Trust for Ornithology (2005) Nest Record Scheme data
First Clutches Laid:
26 Apr (12 Apr - 11 May)
Number of Broods:
1(2)
See trends in Breeding Productivity
Number Ringed:
Annual Totals
Adult Survival:
0.532
± 0.008
(M:0.508
± 0.034;
F:0.421
± 0.028)
Juvenile Survival:
0.379 (in First-Year)
Age at First Breeding:
1
year
Typical Lifespan:
3
years
Maximum Recorded Age:
9 years 9 months 2 days (set in 1990)
Read a summary of Ringing Recoveries
Biometrics
Ring Size:
A
Wing Length
Adult:
63.3 ± 2.8
Range
52.0 - 74.0 mm, (N = 102856)
Juvenile:
62.8 ± 1.9
Range
52.0 - 74.0 mm, (N = 278440)
Male:
65.2 ± 1.5
Range
53.0 - 74.0 mm, (N = 23092)
Female:
61.9 ± 1.4
Range
52.0 - 74.0 mm, (N = 29571)
Weight
Adult:
10.84 ± 0.78
Range
7.70 - 13.80 g , (N =77569)
Juvenile:
10.6 ± 0.8
Range
7.7 - 13.8 . , (N =230712)
Male:
11.15 ± 0.73
Range
7.80 - 13.80 g , (N =16854)
Female:
10.62 ± 0.78
Range
7.70 - 13.80 g , (N =21702)
Seasonal:
Summer 10.79 ± 0.83 (N = 20385)  
Autumn 10.88 ± 0.74 (N = 21071)
Winter 10.89 ± 0.73 (N = 157645)  
Source:
British Trust for Ornithology (2005) Ringing Scheme data
Other Names
Previously Parus caeruleus
Gaelic:
Cailleachag-ghorm
Welsh:
Titw Tomos Las
Danish:
Blĺmejse
Dutch:
Pimpelmees
Finnish:
Sinitiainen
French:
Mésange bleue
German:
Blaumeise
Hungarian:
Kék cinege
Icelandic:
Blámeisa
Irish:
Meantán Gorm
Italian:
Cinciarella
Norwegian:
Blĺmeis
Polish:
Modraszka
Portuguese:
Chapim-azul
Spanish:
Herrerillo común
Swedish:
Blĺmes
Local Names: Tom Tit
For More Information...
Books and Monographs:
Perrins, C. 1979 British tits Collins, London
[598.922 PER]
Flegg, J. 1987 The Blue Tit Shire Publications, Princes Risborough
[Jour: S]
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
BOU Register of Avian Theses entry