Shorebirds are small, beautiful birds that live near wetlands, particularly coastal wetlands. Shorebirds include members of four families of birds, including: sandpipers, plovers, avocets and stilts, and oystercatchers. Known as the "big four sandpipers," the red knot, sandpiper, ruddy turnstone and semipalmated sandpiper account for 97 percent of the shorebirds that stop over in the Delaware Bay. Here are things about shorebirds that you can explore.