David Wimpfheimer is a naturalist and a biologist with a passion for the birds and natural history of the West. During his twenty years of expeditions, he has imparted much knowledge from his own studies and shared a great deal about all aspects of nature. In addition to local classes for the California Academy of Sciences, Marin Agricultural Land Trust and the Point Reyes Field Seminars, he has led Oceanic Society whale watching trips to the Farallon Islands for many years.

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