Population and Distribution
|
|
|
Population Trend:
|
 JNCC Seabird Monitoring Programme
|
|
|
Distribution:
|
Atlas Maps
(Local Atlases)
|
|
|
|
|
British Population Size:
|
Summer:
27 thousand pairs
in 1998-02
|
|
Winter:
110 thousand individuals
in 2004-09
Note: Best estimate
|
|
First Record:
8th Century
|
|
Latest Survey:
Mitchell, P.I. et al. (2004) Seabird populations of Britain and Ireland Poyser, London
|
|
Conservation Status:
AMBER
because
Recent Breeding Population Decline,
Localised Breeding Population,
Important Breeding Population
|
|
Previous Assessments:
2002-2007
AMBER
1996-2001
AMBER
|
|
Races of Concern:
aristotelis AMBER (Recent Decline)
|
|
|
|
Habitat Occupancy (in the Breeding Season):
|
|
No habitat data from BBS
|
|
|
|
European Population Size:
|
|
Summer:
75 to 81 thousand pairs
|
|
Population Assesment from Birds in Europe
|
|
Distribution in Europe
|
|
|
|
Listed on the Appendices/Schedules of:
WBD(I*), Bern(III*)
|
|
|
|
Survey Results:
|
BirdTrack
|
|
|
Seabird 2000 (warning: link to large pdf)
|
|
|
Breeding and Survival
|
|
Egg Size:
63 x 39 mm
|
Egg Weight:
51.0 g (of which 10 % is shell)
|
|
|
|
Number of Nest Records:
787
|
|
Clutch Size:
3 eggs
|
|
|
Incubation:
30- 31 days
|
|
by the:
Male + Female
|
Fledging:
48 - 58days
|
|
as:
Altricial, naked
|
|
|
|
First Clutches Laid:
Unavailable
|
|
Number of Broods:
1
|
|
Number Ringed:
4591
(Annual Totals)
|
|
Adult Survival:
0.878
± 0.001
|
Juvenile Survival:
0.380 (to age 2 )
|
|
|
|
Age at First Breeding:
4
years
|
Typical Lifespan:
12
years
|
|
Maximum Recorded Age:
29 years 10 months 25 days (set in 2007)
|
|
Summary of Ringing Recoveries
|
|
|
|
Biometrics
|
|
Ring Size:
K
|
|
Wing Length
|
Adult:
|
267.6 ± 7.9
|
Range
|
255 - 280 mm, N =297
|
|
|
Juvenile:
|
Insufficient Data
|
|
|
Male:
|
273.6 ± 5.5
|
|
265 - 281 mm, N =42
|
|
|
Female:
|
263.4 ± 6.8
|
|
252 - 275 mm, N =50
|
|
|
|
Weight
|
Adult:
|
1.86 ± 0.19
|
Range
|
1.54 - 2.10 kg , N =143
|
|
|
Juvenile:
|
Insufficient Data
|
|
|
Male:
|
1.98 ± 0.12
|
|
1.83 - 2.20 kg , N =28
|
|
|
Female:
|
1.84 ± 0.19
|
|
1.52 - 2.10 kg , N =31
|
|
Source:
|
British Trust for Ornithology (2005) Ringing Scheme data
|
|
|
|
Other Names
|
|
European Shag
|
|
|
|
|
|
Gaelic:
Sgarbh-an-sgumain
|
Welsh:
Mulfran Werdd
|
|
Danish:
Topskarv
|
Dutch:
Kuifallscholver
|
|
Finnish:
Karimetso
|
French:
Cormoran huppé
|
|
German:
Krähenscharbe
|
Hungarian:
Üstökös kárókatona
|
|
Icelandic:
Toppskarfur
|
Irish:
Seaga
|
|
Italian:
Marangone dal ciuffo
|
Norwegian:
Toppskarv
|
|
Polish:
Kormoran czubaty
|
Portuguese:
Corvo-marinho-de-crista
|
|
Spanish:
Cormorán mońudo
|
Swedish:
Toppskarv
|
|
|
|
Local Names:Green Cormorant
|
|
|
|
|
For More Information...
|
|
Books and Monographs:
|
|
Johnsgard, P. 1993 Cormorants, darters and pelicans of the world Smithsonian Institution Press, Washington
[598.45 JON]
|
|
Wanless, S. & Harris, M. 1997 BWP Update 1:3-13
|
|
Nelson, J.B. 2005 Pelicans, Cormorants and their allies Oxford University Press
[598.45 NEL]
|
|
|
|
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
|
|
BOU Register of Avian Theses entry
|
|
|
