Posted by: Sandy Steinman | August 17, 2021

Islands and Avian Evolution

Golden Gate Audubon Society presents: Islands and Avian Evolution with Bob Lewis

Thursday, August 19  7 p.m. via Zoom Free

Islands play a key role in both the evolution of new avian species and the extinction of others. Because of their isolation, birds that arrive on islands evolve separately from their parent group and eventually become unique… thus a new species is born! But that isolation also makes them vulnerable to threats like hurricanes, volcanoes, rising seas, and introduced diseases or predator species. Although over 80 percent of bird species live on continents, 92 percent of extinctions since 1500 have been on islands. Join us to view some marvelous island species and learn about the conservation issues unique to islands.To join this event on your computer or other device:

Passcode: 493526

Note: A video recording of this presentation will be available for three weeks after the talk. For a link, see our web site about two days after the event:

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