Least Sandpiper (Calidris minutilla)
Above: A Least Sandpiper in southern Florida (2/2004).
Below: A Least Sandpiper along Port Mahon Road, Delaware (5/20/2006).
Below: A Least Sandpiper in Wicomico Co., Maryland (7/27/2007).
Below: A Least Sandpiper forages along the Bay shore in St. Mary's Co., Maryland (5/4/2008).
Below: A Least Sandpiper in worn breeding plumage at Rumbly Point, Somerset Co., Maryland (7/20/2008). All of the migrant shorebirds I encountered on this date were adults.
Below: A juvenile Least Sandpiper at Swan Creek, Maryland (8/10/2011).