Bay Currents talk: What Your Bird Guide Tells You About Evolution

What ever happened to clapper rails, brown towhees, and marsh hawks? Modern genetic testing is not only making you learn new names for familiar creatures. It's unveiling unexpected family trees, and revealing fascinating adaptations on the long evolutionary road from dinosaurs to today's feathered wonders. Bring a bird guide!  (We'll have loaners, too).

Retired East Bay Regional Park District Naturalist Alan Kaplan is renowned for the wide-ranging curiosity and enthusiasm he brings to all things natural,; his Golden Gate Audubon bird walks draw crowds.