Adult sanderling (Calidris alba) feeding on the tidal flat in the Galapagos Island Archipelago, Ecuador.

A flock of sanderlings (Calidris alba), on the beach at Isla Magdalena, Baja California Sur, Mexico, North America

A flock of migrating sanderlings (Calidris alba) taking flight on Sand Dollar Beach, Baja California Sur, Mexico, North America

Sanderling (Calidris alba), County Clare, Munster, Republic of Ireland, Europe

A flock of migrating sanderlings (Calidris alba), Sand Dollar Beach, Baja California Sur, Mexico, North America

Sanderling (Calidris alba), County Clare, Munster, Republic of Ireland, Europe

Sanderling (Calidris alba) group resting and sleeping, head tucked in to feathers for warmth and one leg lifted, one waking and another stretching wings. Gott bay, Argyll,, Scotland, UK

Sanderling, Calidris alba, and Turnstone, Arenaria interpres, feeding in algae, beach, France

Sanderling (Calidris alba) sprinting across a shallow film of water on sandy beach, with a reflection of itself below. Soroby. Argyll,. Scotland, UK

Sanderling (Calidris alba) running from incoming waves early in the morning silhouetted against the orange early light. Soroby. Argyll,. Scotland, UK

Sanderling, Calidris alba, feeding in algae, beach, France (rr)

Sanderling (Calidris alba) sprinting across a shallow film of water on sandy beach, with a reflection of itself below. Soroby, Argyll,, Scotland, UK

Sanderling (Calidris alba) with beak in sand, drilling down for grubs as it races along the beach. Soroby. Argyll, Scotland, UK

Sanderling (Calidris alba) with beak in sand, drilling down for grubs as it races along the beach on a film of water creating a reflection. Soroby, Argyll,, Scotland, UK (rr)

Sanderling, Calidris alba, feeding in algae, beach, France

Sanderling (Calidris alba) running from incoming waves early in the morning silhouetted against the orange early light. Soroby, Argyll, Scotland, UK

Sanderling (Calidris alba) flying over incoming waves early in the morning. Soroby. Argyll,. Scotland, UK

Sanderling (Calidris alba) with beak in sand, drilling down for grubs as it races along the beach on a film of water creating a reflection. Soroby. Argyll,. Scotland, UK

Sanderling (Calidris Alba) in Black and White, birds on the beach at low tide, Dawlish Warren, Devon, England, United Kingdom, Europe

Sanderling (Calidris Alba), birds on the beach at low tide, Dawlish Warren, Devon, England, United Kingdom, Europe

Sanderling (Calidris Alba), birds on the beach at low tide, Dawlish Warren, Devon, England, United Kingdom, Europe

Sanderling (Calidris alba), winter plumage, wading bird, Helgoland Island, dune, Schleswig Holstein, Germany, Europe

Sanderling (Calidris alba) runs in shallow water, Rio Lagartos, Yucatan, Mexico, Central America