SFBC Rec Ride: Birding by Bike

"Join SF Bicycle Coalition members David & Annie Armstrong on a
half-day biking tour of the Presidio and Fort Mason. David has been
leading birding trips for the Audubon Society for 10 years in SF. Visit
various hotspots such as Mountain Lake, Crissy Lagoon, and others in
search of resident, migrant and newly arrived breeding species. The
biking will be at a relaxed pace but the birding may be fast and
furious!"