Rolf Nussbaumer / Sanderling running along beach {Calidris alba} Sanibel Is, Florida, USA

Andrew Parkinson / Sanderling wading in shallows {Calidris alba} Donna Nook, Lincolnshire, UK

Nick Upton / Sanderling (Calidris alba) foraging on a wave-washed sandy beach, Costa de Papagayo, Lanzarote, Canary Islands, February.

Pedro Narra / Sanderling (Calidris alba) foraging on beach, Sado Estuary, Portugal. October

Pedro Narra / Sanderling (Calidris alba) foraging on beach, Sado estuary, Portugal . December

Lynn M. Stone / Sanderling (Calidris alba) foraging on beach. Indian Shores, Pinellas County, Florida, USA.

Ernie Janes / Sanderlings (Calidris alba) running along the tideline Cromer, Norfolk, England, UK, November.

Fabrice Cahez / Sanderling (Calidris alba) carrying washed up seahorse, Britanny, France, October.

Fabrice Cahez / Sanderling (Calidris alba) running across beach, Britanny, France, October.

Fabrice Cahez / Sanderling (Calidris alba) foraging on beach, Britanny, France, October.

Fabrice Cahez / Sanderling (Calidris alba) foraging on beach, Britanny, France, October.

Fabrice Cahez / Sanderling (Calidris alba) Britanny, France