For details point at or click the
Black Guillemot Cepphus grylle [Linnaeus, 1758]
Other Names
Trends & Distribution
Breeding & Survival
Biometrics
Books & Links
Order:
Charadriiformes
Family:
Alcidae
BTO Codes:
TY, BLAGU
EURING No:
6380
Number in Britain:
38 thousand individuals (Summer)
Conservation Status:
UK:
AMBER
European:
2 Concern, most in Europe; Depleted
Global:
Least Concern
Links to: Images
Videos
Sound
Status in UK:
(A) Resident Breeder
Subspecies:
arcticus , grylle recorded in Britain (of 5 subsp. in the world)
.
Length:
31 cm
Wingspan:
55 cm
Weight:
M/F: 420 g
Scientific name from:
Gr.: kepphus =a waterbird desbribed by Aristotle
and Swedish: grissla =the guillemot
World Distribution:
n&w Europe, n North America
Habitat:
Rocky islands & cliffs, otherwise pelagic
Diet:
Mostly fish, also crustaceans especially in the Arctic
TitBit:
The Black Guillemot carries fish crosswise in its bill with some birds being right- and some birds being left-handed in the way the fish point
Population and Distribution
Population Trend:
No population trend available
Distribution:
New Atlas )
British Population Size:
Summer:
38 thousand individuals
in 1998-02
First Record:
1661
Latest Survey:
Mitchell, P.I. et al. (2004) Seabird populations of Britain and Ireland Poyser, London
Conservation Status:
AMBER
because
Species of European Concern,
Previous Assessments:
2002-2007
AMBER
1996-2001
AMBER
Races of Concern:
arcticus GREEN
Habitat Occupancy (in the Breeding Season):
No habitat data from BBS
European Population Size:
Summer:
120 to 290 thousand pairs
Birds in Europe
Listed on the Appendices/Schedules of:
Bern(III)
Survey Results:
Breeding and Survival
Egg Size:
59 x 40 mm
Egg Weight:
50.0 g (of which 8 % is shell)
Number of Nest Records:
50
Clutch Size:
1 - 2 eggs
Incubation:
23- 40 days
by the:
Male + Female
Fledging:
31 - 51days
as:
Altricial, downy
First Clutches Laid:
Unavailable
Number of Broods:
1
Number Ringed:
282
Adult Survival:
0.870
± 0.007
Juvenile Survival:
No data
Age at First Breeding:
4
years
Typical Lifespan:
11
years
Maximum Recorded Age:
22yr 11m
(Finland: 25yr 11m)
Biometrics
Ring Size:
E*
Wing Length
Adult:
164.6 ± 4.7
Range
157 - 174 mm, N =43
Juvenile:
Insufficient Data.
Male:
Insufficient Data
Female:
Insufficient Data
Weight
Adult:
409.3 ± 36.33
Range
360.0 - 480.0 g , N =35
Juvenile:
Insufficient Data.
Male:
Insufficient Data
Female:
Insufficient Data
Source:
British Trust for Ornithology (2005) Ringing Scheme data
Other Names
Gaelic:
Gearra-glas
Welsh:
Gwylog Ddu
Danish:
Tejst
Dutch:
Zwarte zeekoet
Finnish:
Riskilä
French:
Guillemot à miroir
German:
Gryllteiste
Hungarian:
Fekete lumma
Icelandic:
Teista
Irish:
Foracha Dhubh
Italian:
Uria nera
Norwegian:
Teist
Polish:
Nurnik zwyczajny
Portuguese:
Arau-d'asa-branca
Spanish:
Arao aliblanco
Swedish:
Tobisgrissla
Local Names: Tystie
For More Information...
Books and Monographs:
Gaston, A. 1998 The auks Oxford University Press, Oxford
[598.618 GAS]
Nettleship, D. & Birkhead, T.R. 1985 The atlantic Alcidae Academic Press, London
[598.618 NET]
See Also:
All About Birds (Cornell Lab of Ornithology)
Gough, G.A. et al. (1998) Patuxent Bird Identification Infocenter
BirdFacts home | BTO Home birdfacts@bto.org These data should be cited as:
© British Trust for Ornithology, | Privacy Statement
button; for sources point at the 
button
Other Names
