Ranch guides are volunteers who share their knowledge and appreciation of nature with visitors to Bolinas Lagoon Preserve during the public season, which runs from March 20 to July 11. The season coincides with the annual return of hundreds of herons and egrets.

Participants will learn about the ranch's history, its 1,000-acre Bolinas Lagoon Preserve, trail teaching techniques, pond life and the historical nesting colony of herons and egrets.

Graduates of the training commit to volunteering four weekend days during the public season for two years. No prior experience is necessary.

To register or for more information, call 868-9244 or send e-mail to rsvp@egret.org.