Markus Varesvuo / Curlew Sandpiper (Calidris ferruginea) reflected in shallow water, Uto Finland July

Markus Varesvuo / Curlew sandpiper (Calidris ferruginea) standing on rock, Finland, July

Markus Varesvuo / Curlew sandpiper (Calidris ferruginea) standing on rock, Finland, July

Markus Varesvuo / Curlew sandpiper (Calidris ferruginea) sleeping, Finland, August

David Tipling / Curlew sandpiper (Calidris ferruginea) juvenile, Titchell, Norfolk, England, UK, August.

Jan Wegener/ BIA / Curlew Sandpiper (Calidris ferruginea), Victoria, Australia

Jussi Murtosaari / Flock of Dunlin (Calidris alpina), Curlew sandpiper (Calidris ferruginea) and Little stint (Calidris minuta) in flight, Finland, July.

Dave Bevan / Curlew sandpiper (Calidris ferruginea) feeding in shallow water, Suffolk, England, UK. August.

Hanne & Jens Eriksen / Curlew sandpiper (Calidris ferruginea) Oman, May.

Markus Varesvuo / Redshank (Tringa totanus) chick walking in front of Curlew sandpiper (Calidris ferruginea) Uto Finland July

Melvin Grey / Curlew sandpiper (Calidris ferruginea) adult male, summer plumage. Sinoe Lagoon area, Romania.

Gerrit Vyn / Curlew Sandpiper (Calidris ferruginea) in basic plumage, foraging on mud flat, Rakhine State, Myanmar 2012