Useful References

Barron, Alan D. 2001. A Birdfinding Guide to Del Norte County, California. Redwood Economic Development Institute & The Rose Foundation for Communities and the Environment. 211pp; spiral bound.

Brockman, C. Frank 1968. Trees of North America. A field guide to the major native and introduced species north of Mexico. A Golden Guide to Field Identification. Golden Press, New York 280pp.

Burt, William H. & Grossenheider, Richard P. 1976. A Field Guide to the Mammals. (3^rd edition).The Peterson Field Guide Series. Field marks of all North American species found north of Mexico. Houghton Mifflin, Boston 289pp.

Carwardine, Mark. 2000. Whales,Dolphins and Porpoises. A Dorling Kindersley Book. Dorling Kindersely, London. 256pp.

Little, Eric L. 1988.The Audubon Society Field Guide to North American Trees. Western region. Alfred A Knopf, New York. 640pp.

National Geographic 2001. Field Guide to the Birds of North America. (3^rd edition). National Geographic, Washington, D.C. 480pp.

Opler, Paul A. & Wright, Amy Bartlett 1999. Western Butterflies (2^nd Edition) Peterson Field Guides. Houghton Mifflin, Boston & New York. 540pp.

Sibley, David A. 2003. The Sibley Field Guide to Birds of Western North America. Alfred A Knopf, New York. 473pp. [used in the field]

Stebbins, Robert C. 2003. Western Reptiles and Amphibians (3^rd edition) Peterson Field Guides Houghton Mifflin, Boston & New York. 533pp.

Whitehill, Karen & Terry (2003) BEST SHORT HIKES in California’s South Sierra (2^nd Edition) The Mountaineers Books, Seattle. 270pp. [used in text for trail numbering].