Look for Red Knots primarily in coastal habitats such as expansive tidal mudflats, sandy beaches, and estuaries during their migration and non-breeding seasons. During the short Arctic summer, they can be found on dry, stony tundra.

Spot them foraging actively in flocks along the water's edge, often probing deep into the substrate with their relatively short, straight bills. Listen for their characteristic, often soft 'knut' or 'kwit' calls, especially when in flight or when disturbed.

They are most observable during their spectacular spring and autumn migrations, when large congregations gather at critical staging sites. They are active during both day and night, primarily dictated by tidal cycles for foraging. On breeding grounds, they are present during the Arctic summer (June-August), and in wintering grounds, they remain throughout the non-breeding season.