Species › Birds

Red Knot

Calidris canutus

Order: Charadriiformes
Family: Scolopacidae
Presence in the Strait: Migrant
Abundance: scarce
Protection in Spain: Special protection (List)
In Spanish: Correlimos gordo

Marine taxonomy: validated in WoRMS, AphiaID 147433

45% of its open observations in the area are from September.

Photograph: Paolo Zucca, CC BY, vía iNaturalist

Length: 23–25 cm
Wingspan: 47–54 cm
Weight: 165 g

Presence in the Strait

Scarce coastal migrant with irregular numbers wintering (<8).

Identification

The largest and most robust of the Calidris. Summer plumage rufous-orange, similar to the Curlew Sandpiper. Uniform grey in winter. In flight, displays narrow white wing bar and pale grey rump. Juveniles share the same winter plumage as adults, but with scaly appearance.

Movements

Peaks in 1st hf. May and 1st hf. September.

Bioestrecho editorial text. Last revised: 8 September 2026.

Photographs from iNaturalist observations with the licence checked file by file. Those marked “Strait” were taken within the area; place and date are those of each observation.

Calendar in the Strait

45 %

Peak in September. Observations under CC0 or CC BY licences. The distribution also reflects observation effort.

Where it is seen

Open records from the atlas database, in cells of about 3.6 km. Opacity follows the square root of the count, and also reflects where people observe most.

See on the map

First open record: 20 April 1985
Latest record: 31 December 2024

The oldest and the most recent open observation in the extended area. A recent first observation does not mean the species is new: it means nobody had published it openly before.

Conservation

The catalogues, Andalusian and Spanish, are what binds; the Red Book assesses the Spanish population with IUCN criteria, and the global Red List is the context.

LCNTVUENCR

Andalusian Catalogue: Special protection (List)
Spanish Catalogue: Special protection (List)
Red Book of the Birds of Spain 2021: LC · Least concern · wintering or migrating
Global Red List (IUCN): NT · Near threatened

Andalusian Catalogue: Junta de Andalucía, list of 24 April 2025. Spanish Catalogue: MITECO, table of 30 June 2025. Red Book: SEO/BirdLife, 2021 (Annex I). IUCN: via GBIF, 6 September 2026. Red Book and IUCN categories are assessments; catalogue categories are legal obligations.

Phenology compared

Monthly distribution in proportion, by decade. It shows whether the passage is getting earlier or later.

2000–2009

2010–2026

Proportions, not totals: observation effort grew faster than any population.

Same genus in the Strait

Curlew Sandpiper18–23 cm · Migrant · overlapping size
Pectoral Sandpiper19–23 cm · Vagrant · overlapping size
Sanderling20–21 cm · Seasonal
Dunlin16–22 cm · Seasonal
Little Stint12–14 cm · Seasonal

Species of the same genus that also occur here, ordered by how close they are in size. Being relatives does not mean they are confused in the field, but that is where the doubts start: compare size and season.

Classification

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Charadriiformes
Family: Scolopacidae
GBIF taxon key: 2481765

Sources

Distribution and calendar: Bioestrecho's own database, ingested from GBIF and OBIS
Photograph: Paolo Zucca, CC BY, vía iNaturalist
Taxonomy: GBIF backbone, pending WoRMS for marine taxa
Editorial text: written by Bioestrecho
Last revised: 8 September 2026

Red Knot

Presence in the Strait

Identification

Movements

Gallery