Q: Are red knots the only species of bird to use horseshoe crab eggs as a resource?

Flexi Says: The eggs of horseshoe crab are a rich source of food for many shore birds that migrate along the Delaware Bay shorelines. Migratory shore birds like red knots, ruddy turnstones, semipalmated plovers, and laughing gulls are a few of the migratory birds which feed on horseshoe crab eggs.