Sunday, February 28, 2010, 12:00 p.m. – 2:00 p.m.: Naturalist and Historian David Schmidt will lead a hike from the San Francisco Zoo to see snowy plovers. RSVP required: see above and/or email info[at]CaliforniaNatureTours.com. Everyone is welcome. Free. Meet at the corner of Sloat Blvd. and Great Highway, San Francisco, near the San Francisco Zoo.