National Geographic field guide to the birds of North America /
Birds of North America Field guide to the birds of North America
edited by Jon L. Dunn and Jonathan Alderfer.
- 5th ed.
- Washington, D.C. : National Geographic, c2006.
- 503 p. : col. ill., col. maps ; 21 cm.
Includes index. Rev. ed. of: Field guide to the birds of North America. 4th ed., Fully rev. & updated. 2002.