Dunlins and Stilt Sandpipers might not normally be confused but in winter plumage, and while standing in relatively deep water, they can be difficult separate. The following images demonstrate the similarities and differences.
All images © Greg Lavaty.
Dunlin in Winter Plumage
Stilt Sandpiper in Winter Plumage. Note the yellow legs.
Dunlin in Winter Plumage
Dunlin in Winter Plumage
Stilt Sandpipers have long, narrow wings.
Stilt Sandpiper landing.
Stilt Sandpiper in non-breeding Plumage.
Stilt Sandpipers in flight.
Dunlin in breeding plumage.
Stilt Sandpiper in spring plumage.
Inexperienced birds sometimes confuse Stilt Sandpipers with yellowlegs or Solitary Sandpiper, even though the bill shape is quite different.