To help the Piping Plovers breed successfully, biologists cage nests to protect the eggs while they are incubating. Biologists may also fence off nesting areas to protect them from public disturbance. Once eggs hatch, larger areas may be closed to provide the chicks the space they need to feed. Interruption of feeding may stress juvenile birds during critical periods in their life cycle. Pets, especially dogs, may harass or kill the birds.