Red Knot, Calidris canutus, is a species of wader found in unvegetated or sparsely vegetated land and marine inlet and transitional water ecosystems. It breeds in Greenland, but winters mainly in coastal areas of western Europe. This species is a full long-distance migrant that utilises few stopover sites or staging areas. The species breeds on dry upland tundra including weathered sandstone ridges, upland areas with scattered willows (Salix spp. ), Dryas spp. and poppy, moist marshy slopes and flats in foothills, well-drained slopes hummocked with Dryas spp. and upland glacial gravel close to streams or ponds. Outside of the breeding season the species is strictly coastal, frequenting tidal mudflats or sandflats, sandy beaches of sheltered coasts, rocky shelves, bays, lagoons and harbours, occasionally also oceanic beaches and saltmarshes (European Red List 2015).

Calidris canutus has a winter population size of 504000-565000 individuals in the EU27. The winter population trend in the EU27 is Increasing in the short term and Increasing in the long term.

The EU population status of Calidris canutus was assessed as Secure, because the species does not meet any of the IUCN Red List criteria for threatened or Near Threatened, or the criteria for Depleted or Declining (the EU27 population or range has not declined by 20% or more since 1980).