Since 2001, the East Bay Regional Park District has managed nesting habitat for the California Least Tern (Sternula antillarum browni) at the Hayward Regional Shoreline (37° 37′ 47″ N, 122° 8′ 46″ W) on the eastern shore of San Francisco Bay, California. As has happened elsewhere in coastal California (Powell and Collier 2000), our efforts have resulted in the recent attraction of breeding Western Snowy Plovers (Charadrius alexandrinus nivosus) to the site. In 2008 and 2009 the plovers attempted one and four nests, respectively, within the Least Tern colony.