The buff-breasted sandpiper (Calidris subruficollis) is a small shorebird. The species name subruficollis is from Latin subrufus, 'reddish' (from sub, 'somewhat', and rufus, 'rufous') and collis, '-necked/-throated' (from collum, 'neck'). It is a calidrid sandpiper. This species is brown above, and has a buff face and underparts in all plumages. It has a short bill and yellow legs. Males are larger than females. Juveniles resemble the adults, but may be paler on the rear underparts. It migrates mainly through central North America, and is uncommon on the coasts. It occurs as a regular wanderer to western Europe, and is not classed as rare in Great Britain or Ireland, where small flocks have occurred. Only the pectoral sandpiper is a more common American shorebird visitor to Europe. (Source: Wikipedia.org, CC BY-SA)