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"Sanderling (Calidris arenaria), in breeding plumage." -Whitney, 1911

Sanderling

"Sanderling (Calidris arenaria), in breeding plumage." -Whitney, 1911

"Fig. 39 shows a Tridactyle foot of a sanderling, Calidris arenaria." Elliot Coues, 1884

Tridactyle Foot of a Sanderling

"Fig. 39 shows a Tridactyle foot of a sanderling, Calidris arenaria." Elliot Coues, 1884