All birds/Scolopacidae/Red Knot
AI reconstruction of Red Knot (Calidris canutus)AI

AI reconstruction created with Nano Banana 2 · 1K, grounded in the profile’s documented taxonomy, habitat, natural-history sources, and an open-license visual reference when available. It is an interpretive image, not documentary evidence. Image policy

Red Knot (Calidris canutus)
Verified source photographPaolo ZuccaCC-BY · View source
PRB-0117Charadriiformes

Red Knot

Playero Rojizo

Calidris canutus

Accidental / vagrantIUCN NT · Near Threatened

The red knot or just knot (Calidris canutus) is a medium-sized shorebird which breeds in tundra and the Arctic Cordillera in the far north of Canada, Europe, and Russia. It is a large member of the Calidris sandpipers, second only to the great knot. Six subspecies are recognised. Their diet varies according to season; arthropods and larvae are the preferred food items at the breeding grounds, while various hard-shelled molluscs are consumed at other feeding sites at other times. North American breeders migrate to coastal areas in Europe and South America, while the Eurasian populations winter in Africa, Papua New Guinea, Australia, and New Zealand. This species forms enormous flocks when not breeding.

FamilyScolopacidaeSandpipers and Allies
Puerto Rico occurrenceAccidental / vagrantAvibase inferred core 380
Primary habitatMudflats; beaches; salt flats; tidal shallowsMudflats; beaches; salt flats; tidal shallows
Primary dietInvertebrateAquatic predator
Average mass187 gGlobal trait estimate
MovementMigratoryTerrestrial

Sound archive

Hear its voice

Explore real songs and calls. The spectrogram turns each sound into a visual trace of time and frequency.

XC1088498Recording 1 of 3flight call
Spectrogram of Red Knot: flight call
SpectrogramCalidris canutus

Play: flight call by Sonothèque ADVL

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Sound recorded by Sonothèque ADVL · XC1088498 · CC0 1.0. Visualization by Stichting Xeno-canto voor Natuurgeluiden.

Every recording retains the creator, catalogue number, and license published by Xeno-canto. Metadata via GBIF

Island profile

Catalog scopeAvibase inferred core 380

About the Red Knot

The red knot or just knot (Calidris canutus) is a medium-sized shorebird which breeds in tundra and the Arctic Cordillera in the far north of Canada, Europe, and Russia. It is a large member of the Calidris sandpipers, second only to the great knot. Six subspecies are recognised. Their diet varies according to season; arthropods and larvae are the preferred food items at the breeding grounds, while various hard-shelled molluscs are consumed at other feeding sites at other times. North American breeders migrate to coastal areas in Europe and South America, while the Eurasian populations winter in Africa, Papua New Guinea, Australia, and New Zealand. This species forms enormous flocks when not breeding.

Conservation

Near Threatened

IUCN NT; ESA Threatened

Global IUCN
NT
Puerto Rico DNER
No current listing in source crosswalk
Federal ESA
Threatened
Critical habitat
No in cited 2026 table

Natural history

How it lives

Habitat
Mudflats; beaches; salt flats; tidal shallows
Elevation
0–300 m
Nest
Scrape · Ground
Clutch
3–4 eggs
Social behavior
Social / flocking; Singly and pairs

Keep exploring

This bird belongs to 8 paths through the atlas.

Evidence trail

Sources, media & further reading

Research note: Federal listing applies to rufa subspecies; keep trinomial