The National Park Service is currently protecting Western Snowy Plovers with beach closures at North Beach, Abbotts Lagoon, and Limantour. There are only 1500 Snowy Plovers left on the west coast and they are listed under the Endangered Species Act.
Source: Point Reyes National Seashore
Date: Jun 15, 2018
Author: Susan Kelly
Link: http://www.nps.gov/pore/planyourvisit/closures.htm
Document: Western Snowy Plovers.pdf