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Knot Calidris canutus [Linnaeus, 1758]
Other Names
Trends & Distribution
Breeding & Survival
Biometrics
Books & Links
Order:
Charadriiformes
Family:
Scolopacidae
BTO Codes:
KN, KNOT.
EURING No:
4960
Number in Britain:
284 thousand birds (Winter)
Conservation Status:
UK:
AMBER
European:
3 Concern, most not in Europe; Declining
Global:
Least Concern
Links to:
Images
Videos
Sound
Status in UK:
(A) Passage/Winter Visitor
Subspecies:
canutus , islandica recorded in Britain (of 6 subsp. in the world)
.
Length:
24 cm
Wingspan:
59 cm
Weight:
M/F: 140 g
Scientific name from:
Gr.: kalidris =grey waterside bird described by Aristotle
and after Canute (995-1035), king of England
World Distribution:
BREEDS: arctic North America, Greenland, n Siberia, WINTERS: Europe, s Asia south to s Africa & Australia, s South America
Habitat:
Tundra, on migration coastal
Diet:
Summer, insects and plant material, Winter Inter-tidal invertebrates, esp molluscs
TitBit:
The Knot's name, recalling King Canute, stems from the fact that it is often found feeding on the tide edge, sometimes in large numbers - with flocks in excess of 100,000 birds appearing like drifts of smoke in the sky sometimes recorded, especially in col
d winters
Population and Distribution
Population Trend:
No population trend available
Distribution:
Atlas Maps
(Help with the New Atlas )
British Population Size:
Winter:
284 thousand individuals
in 1994-99
 
First Record:
15th Century
[Fossil evidence from
Devensian (last) glaciation, 10-120,000 yr ago]
Conservation Status:
AMBER
because
Species of European Concern,
Localised Non-breeding Population,
Important Non-breeding Population
Previous Assessments:
2002-2007
AMBER
1996-2001
AMBER
Races of Concern:
, islandica AMBER (European Concern)
Habitat Occupancy (in the Breeding Season):
No habitat data from BBS
European Population Size:
Summer:
15 to 30 thousand pairs
Population Assesment from Birds in Europe
Distribution in Europe
Listed on the Appendices/Schedules of:
WBD(II*), Bern(III), Bonn(II), AEWA
Survey Results:
Wetland Bird Survey Alerts
Breeding and Survival
Egg Size:
43 x 30 mm
Egg Weight:
19.3 g (of which 5 % is shell)
Number of Nest Records:
0
Clutch Size:
4 eggs
Incubation:
21- 22 days
by the:
Male + Female
Fledging:
18 - 20days
as:
Precocial, downy
First Clutches Laid:
Does not breed in Britain, or too few Nest Records
Number of Broods:
1
Number Ringed:
1661
Adult Survival:
0.841
± 0.066
Juvenile Survival:
No data
Age at First Breeding:
1
year
Typical Lifespan:
7
years
Maximum Recorded Age:
27yr 3m
Biometrics
Ring Size:
C2
Wing Length
Adult:
169.4 ± 6.2
Range
159 - 179 mm, N =3618
Juvenile:
164.7 ± 3.9
158 - 171 mm, N =1589
Male:
Insufficient Data
Female:
Insufficient Data
Weight
Adult:
138.1 ± 20.16
Range
120.0 - 158.0 g , N =3564
Juvenile:
131.2 ± 14.72
107.0 - 156.0 g , N =1540
Male:
Insufficient Data
Female:
Insufficient Data
Source:
British Trust for Ornithology (2005) Ringing Scheme data
Other Names
Red Knot
Gaelic:
Luatharan-gainmhich
Welsh:
Pibydd yr Aber
Danish:
Islandsk ryle
Dutch:
Kanoet
Finnish:
Isosirri
French:
Bécasseau maubčche
German:
Knutt
Hungarian:
Sarki partfutó
Icelandic:
Rauđbrystingur
Irish:
Cnota
Italian:
Piovanello maggiore
Norwegian:
Polarsnipe
Polish:
Biegus rdzawy
Portuguese:
Seixoeira
Spanish:
Correlimos gordo
Swedish:
Kustsnäppa
For More Information...
Books and Monographs:
Harrington, B. 1996 The flight of the red knot W.W. Norton, New york
[598.612 HAR]
Piersma, T. 1994 Close to the edge Uitgeverij Het Open Boek, Den Burg
[598.612 PIE]
See Also:
All About Birds (Cornell Lab of Ornithology)
Gough, G.A. et al. (1998) Patuxent Bird Identification Infocenter
Wikipedia entry
BOU Register of Avian Theses entry
Recent sightings and information from BirdGuides.com
Selected scientific papers published 1980-2005
Find more papers on Google Scholar
Find more papers on Scirus
BirdFacts home | BTO Home Email: birdfacts@bto.org These data should be cited as: Robinson, R.A. (2005) BirdFacts: profiles of birds occurring in Britain & Ireland (v1.24, June 2009). BTO Research Report 407, BTO, Thetford (http://www.bto.org/birdfacts)
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