Red Knot determination[order] Charadriiformes | [family] Scolopacidae | [latin] Calidris canutus | [UK] Red Knot | [FR] Bécasseau maubèche | [DE] Knutt | [ES] Correlimos Gordo | [IT] Pivanello maggiore | [NL] Kanoet


Subspecies and global distribution

  1. Calidris canutus islandica islands off n Canada, n Greenland
  2. Calidris canutus rufa n Canada
  3. Calidris canutus roselaari Wrangel I. (ne Siberia), nw Alaska
  4. Calidris canutus rogersi Chukotsk Pen. (e Siberia)
  5. Calidris canutus piersmai New Siberian Arch.
  6. Calidris canutus canutus nc Siberia
  7. Calidris canutus NA, EU n

Literature

Title
Length of stopover, fuel storage and a sex-bias in the occurrence of two subspecies of Red Knots Calidris c. canutus an d C.c. islandica in the Dutch Wadden Sea during southward migration.
Author(s): Nebel, S ., T. Piersma, J . van Gils, A. Dekinga & B . Spaans 2000
Abstract: During southward migration the Wadden Sea is the meeting place of Red Knots Calidris canutus of two subspecies that breed in either western Siberia (C. c. canutus) or north Greenland and north-east Can ada (C. c . islandica), but the details of their..[more]..
Source: Ardea 88(2) : 165-176
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Title
Southward migration and fuel deposition of Red Knots Calidris canutus.
Author(s): Helseth A., Lindström Å. & Stervander M.
Abstract: We compared the differences between spring and autumn in migration speed, fuelling rates and fuel loads of migrating Red Knots Calidris canutus. As a basis we used ringing data from Ottenby Bird Observatory, southeastern Sweden, collected 1948-2003, ..[more]..
Source: ARDEA 93 (2): 213-224.
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Title
Body transformations, condition, and survival in Red Knots Calidris canutus travelling to breed at Alert, Ellesmere Island, Canada.
Author(s): Morrison R.I.G.
Abstract: This paper reviews the nutrient storage dynamics and body changes of Red Knots Calidris canutus islandica during migration through their final spring stopover area in Iceland and after arrival on the breeding grounds in the northeastern Canadian High..[more]..
Source: ARDEA 94 (3): 607-618
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Title
Reconstructing palaeoflyways of the late Pleistocene and early Holocene Red Knot Calidris canutus.
Author(s): Buehler D.M., Baker A.J. & Piersma T.
Abstract: Bird migration systems must have changed dramatically during the glacial-interglacial cycles of the Pleistocene and as novel habitats became available since the last glacial maximum. This study combines molecular dating of population divergence times..[more]..
Source: ARDEA 94 (3): 485-498
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Title
Modelling phenotypic flexibility: an optimality analysis of gizzard size in Red Knots Calidris canutus
Author(s): van Gils J.A., Piersma T., Dekinga A. & Battley P.F.
Abstract: Reversible phenotypic changes, such as those observed in nutritional organs of long-distance migrants, increasingly receive the attention of ornithologists. In this paper we review the cost-benefit studies that have been performed on the flexible giz..[more]..
Source: ARDEA 94 (3): 409-420.
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Title
Digestive bottleneck affects foraging decisions in red knots Calidris canutus. I. Prey choice
Author(s): JAN A. VAN GILS, SEM R. DE ROOIJ et al.
Abstract: Rate-maximizing foragers that only divide their time between searching and handling prey should, according to the classical contingency model (CM), only select those prey whose energy content per unit handling time (i.e. profitability) exceeds or equ..[more]..
Source: Journal of Animal Ecology 74 (1), 105-119
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Title
Digestive bottleneck affects foraging decisions in red knots Calidris canutus. II. Patch choice and length of working day
Author(s): JAN A. VAN GILS, ANNE DEKINGA et al.
Abstract: When prey occur at high densities, energy assimilation rates are generally constrained by rates of digestion rather than by rates of collection (i.e. search and handle). As predators usually select patches containing high prey densities, rates of dig..[more]..
Source: Journal of Animal Ecology 74 (1), 120-130
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Title
Arrival and weight gain of Red Knot Calidris canutus, Ruddy Turnstone Arenaria interpres and Sanderling Calidris alba staging in Delaware Bay in spring
Author(s): R.A. Robinson, P.W. Atkinson & N.A. Clark
Abstract: Delaware Bay is an important spring staging area for shorebirds migrating north along the eastern American coast, with birds relying heavily on Horseshoe Crab Limulus polyphemus eggs during their stay. While many species use the Bay, three species ..[more]..
Source: BTO Research Report No.307, February 2003
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Title
Fuel use and metabolic response to endurance exercise: a wind tunnel study of a long-distance migrant shorebird
Author(s): Susanne Jenni-Eiermann1, Lukas Jenni1, Anders Kvist, Åke Lindström, Theunis Piersma and G. Henk Visser
Abstract: This study examines fuel use and metabolism in a group of long-distance migrating birds, red knots Calidris canutus (Scolopacid ), flying under controlled conditions in a wind tunnel for up to 10 h. Data are compared with values for resting birds fas..[more]..
Source: The Journal of Experimental Biology 205, 2453-2460 (2002)
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Title
Time course and reversibility of changes in the gizzards of red knots alternately eating hard and soft food
Author(s): Anne Dekinga, Maurine W. Dietz, Anita Koolhaas, and Theunis Piersma
Abstract: The ability to change organ size reversibly can be advantageous to birds that perform long migrations. During winter, red knots (Calidris canutus) feed on shellfish and carry a muscular gizzard that weighs 10 % of their body mass. Gizzard size decrea..[more]..
Source: The Journal of Experimental Biology 204, 2167-2173 (2001)
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Title
Cost-benefit analysis of mollusc eating in a shorebird I. Foraging and processing costs estimated by the doubly labelled water method
Author(s): Theunis Piersma, Anne Dekinga, Jan A. van Gils, Bart Achterkamp, and G. Henk Visser
Abstract: Although the energy costs of foraging and food processing in vertebrates may be considerable, they have rarely been quantified separately. Here we present estimates for both cost factors based on a series of trials with a shorebird, the red knot Cali..[more]..
Source: The Journal of Experimental Biology 206, 3361-3368
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Title
Two estimates of the metabolic costs of antibody production in migratory shorebirds: low costs, internal reallocation, or both?
Author(s): Luisa Mendes, Theunis Piersma, Dennis Hasselquist
Abstract: We measured the costs of mounting a humoral immune response using two novel antigens (tetanus and diphtheria) in two shorebird species (Scolopacid ): Red Knot (Calidris canutus, measured in autumn) and Ruff (Philomachus pugnax, measured in spring). M..[more]..
Source: J Ornithol (2006) 147: 274-280
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Title
Where waders may parallel penguins: Spontaneous increase in locomotor activity triggered by fat depletion in a voluntarily fasting Knot.
Author(s): Piersma T. & Poot M.
Abstract: A Knot Calidris canutus, kept with four conspecifics on an enclosed artificial outdoor tidal flat in The Netherlands, refused to feed on the available bivalve prey for a period of 18 days and thereby decreased in mass from 209 g to 107 g, at which po..[more]..
Source: ARDEA 81 (1): 1-8.
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Title
Distribution, migrations and biometrics of Knots Calidris canutus canutus on Taimyr, Siberia
Author(s): Tomkovich P.S. & Soloviev M.Y.
Abstract: Studies carried out in northern Taimyr in 1982-84 and 1990-92 were combined with data from other sources to describe the breeding distribution and densities and the migration of Knots at Taimyr Peninsula, north-central Siberia. Morphometrics, recent ..[more]..
Source: ARDEA 84 (1): 85-98.
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Title
Endogenous circannual rhythmicity in a non-passerine migrant, the Knot Calidris canutus.
Author(s): Cadee N., Piersma T. & Daan S.
Abstract: We present experimental evidence for endogenous control of circannual rhythms in a long-distance migratory wader, the Knot Calidris canutus. Six individuals of the subspecies canutus were caught during northward migration whilst staging in France, an..[more]..
Source: ARDEA 84 (1): 75-84.
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Title
Changing balance between survival and recruitment explains population trends in Red Knots Calidris canutus islandica wintering in Britain, 1969-1995
Author(s): Boyd H. & Piersma T.
Abstract: The demography of Red Knots Calidris canutus islandica wintering in Britain from 1969 to 1995 was examined using published data on winter numbers, unpublished ringing data, and information on the percentages first year birds in late autumn and winter..[more]..
Source: ARDEA 89 (2): 301-317.
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