Sunday, December 19, 2010, 9:30am-12:30pm: Bring the 2010 Golden Gate National Parks Endangered Species Big Year to a close with a short bike ride to observe some of the imperiled plants and animals clinging to survival in San Francisco’s wild northwestern corner. We’ll start off with some tough ones, searching for Humpback Whale, Steller Sea Lion, Southern Sea Otters, and Marbled Murrelet at Lands End. We’ll then ride through the Presidio to discover the San Francisco Lessingia and the strange story of the Gowen Cypress. Our last stop will be at the Crissy Field Wildlife Protection Area, where we’ll check in on the Western Snowy Plover. RSVP Required: Use the web tool above to RSVP. Bring food and water. Meet at the Bazaar Cafe, 5927 California St., San Francisco, CA 94121.