Coastal zones are habitat for ruddy turnstones and least sandpipers. The surfbird is a large sandpiper, reminiscent of the turnstones or the great knot. Sand Point is a popular rest-stop for migrants, including ruddy turnstones and sanderlings. There are also winter visitors including black-tailed godwits, grey plovers and turnstones. They are fairly gregarious, forming small flocks, often with Ruddy Turnstones. Visiting waders include grey-tailed tattlers, ruddy turnstones, great knots and greater sand plovers. Coastal birds include gulls, terns, turnstones, sanderlings, kentish plovers, herons and Socotra cormorants. With the turnstones it has even been treated as its own family. Coastal migrants (also called "transients") include shorebirds such as plovers, turnstones, sandpipers, willet and yellowlegs. A reef borders part of the coast just off the barrier, attracting oystercatchers and turnstones. Ruddy turnstones engage in a variety of behaviours to locate and capture prey. In terms of wintering sites, ruddy turnstones are particularly faithful to specific locations. When foraging, turnstones adopt different postures indicative of their level of dominance. Turnstones are two bird species that comprise the genus Arenaria in the family Scolopacidae.