Calidris canutus
The red knot or just knot is a medium-sized shorebird which breeds in tundra and the Arctic Cordillera in the far north of Canada, Europe, and Russia. It is the type species of the genus Calidris. Six subspecies are recognised.

Chuck Homler d/b/a Focus On Wildlife · CC BY-SA 4.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Also called
- red knotPBDB
- Sits inside
- CalidrisPBDB
- Diet
- carnivorePBDB, for Coelurosauria
- Life habit
- ground dwelling, solitaryPBDB, for Theropoda
- Motility
- actively mobilePBDB, for Theropoda
- Environment
- marinePBDB, for Charadriiformes
- Mass
- 148 gWikidata
Time the record covers
At least 2.5 million years on record.
The record covers at least 2.58 Mya to 11.7 ka. No occurrence read is dated outside 3.6 Mya to 0 Mya.
9 occurrences of Calidris canutus on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
9 occurrences- Pliocene11%
- Pleistocene44%
- Holocene44%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
1 formation
Loading coastlines…
The named rock units Calidris canutus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.
Calidris canutus and its relatives
PleistoceneWhere Calidris canutus and its relatives were recorded in the Pleistocene.
Found in the same rock
270 taxa- Corvus monedula3 sites
- Falco peregrinus3 sites
- Lagopus muta3 sites
- Ovibos moschatus3 sites
- Pyrrhocorax graculus3 sites
- Tyto alba3 sites
- Vulpes lagopus3 sites
- Accipiter gentilis2 sites
- Accipitridae2 sites
- Anas2 sites
- Anas bahamensis2 sites
- Anatidae2 sites
- Apus apus2 sites
- Athene cunicularia2 sites
- Branta2 sites
- Branta bernicla2 sites
- Canis lupus2 sites
- Charadrius vociferus2 sites
- Chloris chloris2 sites
- Coccothraustes coccothraustes2 sites
- Columba2 sites
- Columba livia2 sites
- Coragyps atratus2 sites
- Corvus corone2 sites
The Paleobiology Database records 8 sites for Calidris canutus, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
8 references- The Northernmost Ruins of the Globe2
- The bird assemblage from the Middle Palaeolithic level I of Arbreda Cave: A taphonomic story1
- The diversity and biogeography of late Pleistocene birds from the lowland Neotropics1
- Biostratigraphy of amphibians, reptiles, birds and mammals in Corsica and the role of man in the Holocene faunal turnover1
- A catastrophic death assemblage and paleoclimatic implications of Pliocene seabirds of Florida1
- The Quaternary avifauna of Crete, Greece1
- Quaternary geology and biology of the Jorgen Bronlund Fjord area, North Greenland1
- The late Pleistocene avifauna of La Carolina, southwestern Ecuador1
Each of the 9 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Calidris canutus
- Source
- Wikipedia/Commons
- Credit
- Chuck Homler d/b/a Focus On Wildlife
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Calidris canutus was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Red knot”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itCalidris through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Linnaeus 1758)