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British Population Size:
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Summer:
80 thousand pairs
in 1988-91
Note: Best estimate
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First Record:
1544
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Conservation Status:
AMBER
because
Recent Breeding Population Decline (1981-2007),
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Previous Assessments:
2002-2007
GREEN
1996-2001
GREEN
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Races of Concern:
apus AMBER (Recent Decline)
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Habitat Occupancy (in the Breeding Season):
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Most frequent in:
Towns
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And found in:
Villages
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Relative Frequency in Each Habitat:
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Migration routes:
Map of foreign ringing recoveries
and summary map from Time to Fly (in pop-up windows)
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Average Day of First Arrival:
23 Apr
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European Population Size:
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Summer:
4.4 to 12 million pairs
(Trend in Numbers)
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Population Assesment from Birds in Europe
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Distribution in Europe mapped by the EBCC Atlas
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Listed on the Appendices/Schedules of:
Bern(III)
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Breeding and Survival
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Egg Size:
25 x 16 mm
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Egg Weight:
3.5 g (of which 6 % is shell)
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Number of Nest Records:
110
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Clutch Size:
2 - 3 eggs
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Incubation:
19- 25 days
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by the:
-
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Fledging:
37 - 56days
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as:
Altricial, naked
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First Clutches Laid:
Unavailable
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Number of Broods:
1
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See trends in Breeding Productivity
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Number Ringed:
Annual Totals
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Adult Survival:
0.808
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Juvenile Survival:
No data
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Age at First Breeding:
4
years
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Typical Lifespan:
9
years
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Maximum Recorded Age:
17 years 11 months 5 days (set in 1999)
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Read a summary of Ringing Recoveries
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Biometrics
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Ring Size:
SO
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Wing Length
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Adult:
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175.0 ± 3.7
Range
155.0 - 192.0 mm, (N = 2130)
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Juvenile:
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168.9 ± 5.4
Range
154.0 - 180.0 mm, (N = 143)
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Male:
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175.4 ± 3.3
Range
165.0 - 186.0 mm, (N = 57)
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Female:
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174.6 ± 4.1
Range
155.0 - 186.0 mm, (N = 143)
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Weight
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Adult:
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39.87 ± 3.36
Range
28.00 - 52.90 g , (N =1160)
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Juvenile:
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33.0 ± 5.1
Range
26.0 - 48.0 . , (N =144)
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Male:
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39.73 ± 4.06
Range
29.10 - 48.00 g , (N =24)
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Female:
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40.72 ± 3.68
Range
33.00 - 49.00 g , (N =93)
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Seasonal:
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Summer 39.88 ± 3.30 (N = 5546)
Autumn 39.44 ± 4.40 (N = 56)
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Source:
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British Trust for Ornithology (2005) Ringing Scheme data
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Other Names
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Common Swift
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Gaelic:
Gobhlan-mòr
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Welsh:
Gwennol Ddu
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Danish:
Mursejler
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Dutch:
Gierzwaluw
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Finnish:
Tervakirskuja
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French:
Martinet noir
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German:
Meuersegler
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Hungarian:
Sarlósfecske
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Icelandic:
Múrsvölungur
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Irish:
Gabhlán Gaoithe
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Italian:
Rondone
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Norwegian:
Tårnseiler
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Polish:
Jerzyk zwyczajny
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Portuguese:
Andorinhão-preto
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Spanish:
Vencejo común
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Swedish:
Tornseglare
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Local Names:Devil Bird, Martlett
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Collective Noun:Scream
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For More Information...
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Books and Monographs:
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Lack, D. 1973 Swifts in a tower Chapman & Hall, London
[598.731 LAC]
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Lack, A. & Overall, R 2002 The museum swifts Oxford University Museum, Oxford
[598.731 LAC]
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Brohall, D. 1980 Devil birds: the life of the swift Hutchinson, London
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See Also:
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Find scientific papers on  Google Scholar
or  Scirus by clicking the icon
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Wikipedia entry
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BirdLife species page
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Recent sightings and information from BirdGuides
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Read State of the Nations Birds by Chris Mead
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