Welcome to the San Francisco field ornithologists website.

About Us

The SFFO is an organization of birders in and around San Francisco who are interested in advancing birding within the city and county of San Francisco.

Please browse the site and see some of the activities of the SFFO. If you’re interested, please join us and get in on the fun! Oh, and by the way, our mascot is the Maltese falcon.

a goose sitting on a rock next to a body of water

Breeding Bird Ecology

a bird sitting on a wood surface

San Francisco Breeding Bird Atlas

A magnum opus which is the result of thousands of hours of work on the breeding bird ecology in San Francisco.

white seagull on dock

Breeding Bird Codes

A discussion of what field evidence is required to document breeding.