Arrival and weight gain of Red knot Calidris canutus, Ruddy turnstone Arenaria interpres and Sanderling Calidris alba staging in Delaware Bay in spring /
Robison, Robert A.
Atkinson, Philip W.
Clark, Nigel A.
British Trust for Ornithology.
Thetford : British Trust for Ornithology,
2003.
Red knot
Sanderling
Ruddy turnstone
Red knot
Sanderling
Ruddy turnstone