LYNN M. STONE / Wilson's Plover (Charadrius wilsonia) on sand beach. St. Petersburg, Florida, USA, April.

Tony Heald / Kittlitz's sand plover (Charadrius pecuarius) in breeding plumage, Etosha National Park, Namibia October

Tony Heald / Kittlitz's sand plover (Charadrius pecuarius) juvenile, Etosha National Park, Namibia October

Loic Poidevin / Grey Plover (Pluvialis squatarola) in profile on wet sand. Breton Marsh, French Atlantic Coast, January.

Andrew Parkinson / Ringed plover (Charadrius hiaticula) portrait on beach, Shetland Islands, Scotland, UK, September.

Ernie Janes / Semipalmated plover (Charadrius semipalmatus) on beach, UK. March

Ernie Janes / Semipalmated plover (Charadrius semipalmatus) on beach, UK. March

Patricio Robles Gil / Pied Lapwing / Plover (Vanellus cayanus) walking on river sand. Parana, Southern Brazil.

Pete Oxford / Three-banded Plover / Three-banded Sandplover(Charadrius tricollaris) in shallow water. Kruger National Park, South Africa, December.

Pete Oxford / Three-banded Plover / Three-banded Sandplover(Charadrius tricollaris) in shallow water. Kruger National Park, South Africa, December.

Tony Heald / Three-Banded Plover (Charadrius tricollaris) by water. Etosha National Park, Namibia, January.

Eric Baccega / Tracks of Semipalmated plover (Charadrius semipalmatus) in sand, St Lawrence gulf, Kouchibouguac National Park, New Brunswick, Canada