Red knots (Calidris canutus) Ruddy turnstones (Arenaria interpres) and Semipalmated sandpipers (Calidris pusilla) Franklin's gull (Leucophaeus pipixcan) and juvenile Herring gulls (LEucophaeus atricilla) on beach to feed on Atlantic horseshoe crab (Limulus polyphemus) eggs, Delaware Bay, New Jersey, USA, May.