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Willow Tit Poecile montana [von Baldenstein, 1827]
Other Names
Trends & Distribution
Breeding & Survival
Biometrics
Books & Links
Order:
Passeriformes
Family:
Paridae
BTO Codes:
WT, WILTI
EURING No:
14420
Number in Britain:
8500 territories (Summer)
Conservation Status:
UK:
RED
European:
Not a species of concern
Global:
Least Concern
Links to: Images
Videos
Sound
Status in UK:
(A) Resident Breeder
Subspecies:
kleinschmidti borealis (V) recorded in Britain (of 11 subsp. in the world)
.
Length:
12 cm
Wingspan:
19 cm
Weight:
M/F: 12 g
Scientific name from:
Gr.: poikolos =spotted
and L.: montanus =mountaineer (from mons =mountain)
World Distribution:
Eurasia
Habitat:
Forest, woodland, often near water
Diet:
Summer, invertebrates, winter, also seeds
Population and Distribution
Population Trend:
Regional Trends:
Distribution:
New Atlas )
British Population Size:
Summer:
8500 territories
in 2000
Note: Best estimate
First Record:
1897
Latest Survey:
Perrins, C.M. (2003) British Birds 96:418-426
Conservation Status:
RED
because
Recent Breeding Population Decline,
Previous Assessments:
2002-2007
RED
1996-2001
AMBER
Races of Concern:
kleinschmidti RED (Recent Decline)
Habitat Occupancy (in the Breeding Season):
Common in:
Scrub
Also found in:
Deciduous Wood, Coniferous Wood
Relative Frequency in Each Habitat:
European Population Size:
Summer:
4 to 7 million pairs
Birds in Europe
Listed on the Appendices/Schedules of:
Bern(III)
Survey Results:
Breeding and Survival
Egg Size:
16 x 12 mm
Egg Weight:
1.3 g (of which 6 % is shell)
Number of Nest Records:
9
Clutch Size:
6 - 8 eggs
7.07 ± 1.76 (2 - 12) N = 60
Incubation:
14- 14 days
13.64 ± 1.16 (12 - 15.300000191) N = 60
by the:
Female
Fledging:
17 - 20days
18.44 ± 1.74 (16 - 21) N = 194
as:
Altricial, downy
Source:
British Trust for Ornithology (2005) Nest Record Scheme data
First Clutches Laid:
28 Apr (16 Apr - 18 May)
Number of Broods:
1
Trends in Breeding Productivity
Number Ringed:
819
Adult Survival:
0.630
(M:0.650
± 0.020;
F:0.600
± 0.020)
Juvenile Survival:
0.590 (in First-Year)
Age at First Breeding:
1
year
Typical Lifespan:
3
years
Maximum Recorded Age:
10yr 4m
Biometrics
Ring Size:
A
Wing Length
Adult:
59.7 ± 2.0
Range
57 - 63 mm, N =702
Juvenile:
59.5 ± 1.8
57 - 62 mm, N =716
Male:
60.4 ± 1.6
58 - 63 mm, N =62
Female:
59.0 ± 1.9
56 - 62 mm, N =94
Weight
Adult:
10.03 ± 0.68
Range
9.00 - 11.00 g , N =500
Juvenile:
9.91 ± 0.63
9.00 - 10.90 g , N =544
Male:
10.24 ± 0.73
9.20 - 11.00 g , N =43
Female:
10.02 ± 0.78 .
8.70 - 11.40 g , N =68
Source:
British Trust for Ornithology (2005) Ringing Scheme data
Other Names
Previously Parus montanus
Gaelic:
Cailleachag-sheilich
Welsh:
Titw'r Helyg
Danish:
Fyrremejse
Dutch:
Matkop
Finnish:
Hömötiainen
French:
Mésange boréale
German:
Weidenmeise
Hungarian:
Kormosfeju cinege
Icelandic:
Votmeisa
Irish:
Italian:
Cincia bigia alpestre
Norwegian:
Granmeis
Polish:
Czarnoglówka
Portuguese:
Chapim-sibilino
Spanish:
Carbonero sibilino
Swedish:
Talltita
For More Information...
Books and Monographs:
Perrins, C. 1979 British tits Collins, London
[598.922 PER]
See Also:
BirdFacts home | BTO Home birdfacts@bto.org These data should be cited as:
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