eBird - A project developed by the Cornell Lab of Ornithology and the National Audubon Society. This site provides a simple way to keep track of the birds you see in North America. Anyone can log on at anytime to submit North American Bird sightings or find out what others are seeing across the continent.
eNature - Great online field guides including audio. Enature is a project of the National Wildlife Federation.
Lindsay Wildlife Experience - Walnut Creek, CA - Wildlife rehabilitation hospital treats native California birds and has a live collection of non-releasable birds and other animals.