Red Knot (Calidris canutus rufa) - adult
Cape Hatteras, USA - May 27, 2006
Canon EOS 20D, Canon 400mm f/5.6 L USM
© Martin Lofgren

Red Knot (Calidris canutus rufa) - immature
Waukegan; Lake County, IL - 1 September 2004
Nikon coolpix 4500, Swarovski AT 80 HD.
© Travis A. Mahan