Point Pelee National Park of Canada
Birds of Point Pelee National Park
© Parks Canada
Sandpiper, Western (Local Rarety)
-Calidris mauri (Cabanis)
Bill and legs blackish, the former often slightly downcurved. Front toes with small basal webs. Small size separates it from all but the Least and Semipalmated sandpipers. Presence of small webs at the base of the front toes distinguishes it from the Least in any plumage. It is less easily distinguished from the Semipalmated Sandpiper except in breeding plumage, at which time the Western has much more rusty (rather than buffy) in the upper parts and heavier streaking on the breast, this often forming V-marks, which frequently extend to the sides. In autumn plumages the two are very difficult to distinguish, but if a deep-rusty feather or two are still retained the dorsum (such feathers are buffy in pusilla) they are diagnostic of mauri.