Countershading is just one of the tricks Snowy Plovers use to avoid detection by predators. Coloration that is darkest along the back and lighter on the belly eliminates a sharply defined shadow. The plover nest is just a scrape in the sand of dunes and beaches above the high tide line, generally within 3 feet of vegetation or debris for concealment, and their speckled eggs are well camouflaged. Sharing the beach with people, pets, and vehicles makes this camouflage somewhat of a problem as well for the endangered bird. Beach raking and other vehicles can overlook nests and crush chicks and eggs. Recreational activities within 100 yards can drive the birds away from their nests, resulting in eggs being exposed to the hot sun.