Audubon Canyon Ranch (ACR), a North Bay leader in conservation science, habitat protection and restoration and nature education, will host a fall backyard naturalist program titled “Autumn Leaves in Colored Pencil,” from 9:30 a.m. to 2 p.m. Saturday, Nov. 16, at its 535-acre Bouverie Preserve in Glen Ellen.

Led by botanical artist Nina Antze, the backyard naturalist program will begin inside Bouverie Preserve’s Gilman Hall with a brief introduction and overview of pencil and journaling techniques, including burnishing and impressed line. The remainder of the class will be held on the trail on a 1- to 3-mile hike, exploring the changes that plant’s leaves, seeds and berries go through as autumn approaches.

Antze is a botanical artist and quiltmaker living in Northern California. She has a degree in fine art from San Francisco State University and has a certificate in botanical illustration from the New York Botanical Gardens. Her quilts have won numerous awards and her botanical paintings and colored pencil drawings have been exhibited in New York and at the Huntington Library, (“Orchid Exhibit, Orchids – a Natural Obsession”) and at Filoli Gardens in 2007.An art supply list will be provided upon registration.

Participants are encouraged to wear long pants, closed-toe hiking shoes and dress in layers as temperatures can vary throughout the day. Bring a lunch to be eaten on the trail and plenty of drinking water.

Cost is $25 per seminar.

Class size is limited. Register by Monday, Nov. 11 at or calling 415-868-9244.

For more information, email or visit