- The Bay Nature Institute - The nonprofit Bay Nature Institute is dedicated to exploring and protecting the natural world of the San Francisco Bay Area.
- East Bay Regional Park District - The East Bay Regional Park District spans Alameda and Contra Costa counties east of San Francisco with 108,000+ acres in 65 parks including over 1,200 miles of trails for hiking, biking, horseback riding and nature study. The Park District offers lakes, shorelines, campgrounds, visitor centers, interpretive and recreation programs, picnic areas, indoor/outdoor rental facilities, golf courses and much more.
- sfbaywildlife.info - Wildlife watching and ecotourism in the San Francisco Bay Area
- Big Cat Detective - Trail camera pictures of big cats and other critters, from England
- Lindsay Wildlife Museum and Hospital - Lindsay Wildlife Museum is a unique natural history and environmental education center where live, wild animals are just inches away. Visitors can listen to the cry of a red tailed hawk, go eye-to-eye with a gray fox and watch a bald eagle eat lunch. More than 50 species of live, non-releasable, native California animals are on exhibit.
- The Cornell University "All About Birds" - All About Birds is created by the staff of the Cornell Lab of Ornithology. It’s our aim to make this site the Web’s best and most comprehensive resource for North American birds, bird watching, and bird conservation—accessible to everyone for free.
Here are some web sites and organizations we like: