November Events

Program Meeting
Thursday, November 17bob-lewis-0328r1

“A Bird’s Rainbow” is the topic of November’s Redbud Audubon program

We are pleased to welcome Bob Lewis to our November meeting. The title of Bob’s talk is: “A Bird’s Rainbow,” and is a look at the fascinating mysteries of the color of birds.

Many birds are brightly colored; others use patterned feathers for camouflage. How do these colors originate? What’sking-penguin-3583 the difference between colors from pigments and physical colors? From Yellow warblers to Anna’s Hummingbirds, from Snow Geese to Brewer’s Blackbirds, each species makes unique use of the feather colors it possesses. What do the colors indicate to other birds? And do birds see the same colors we do? Bob will unravel some of the mysteries of color in birds with a little chemistry, a bit of physics, and a lot of brightly colored slides.

Red-headed Barbet (m) - Suamox, Ecuador

Red-headed Barbet (m) – Suamox, Ecuador


Bob trained as a chemist and worked for Chevron for 33 years. He’s taught birding classes in the Bay Area for over 20 years, and served as the chair of Golden Gate Audubon’s Adult Education Committee. Currently he’s co-teaching a popular Master Birding class at the SF Academy of Sciences with Jack Dumbacher and Eddie Bartley, and Birds of the Bay Area with Rusty Scalf. He loves to travel and photograph birds, and has recently returned from a trip to Peru, chasing the brightly colored birds of that area.