Field guide to the birds of North America.
Washington, D.C. :National Geographic Society,

v. :col. ill., col. maps

Description based on current issue.

Complemented by: Birder's journal, National Geographic guide to birdwatching sites. Eastern U.S., and National Geographic guide to birdwatching sites. Western U.S.

1.Birds--North America--IdentificationDynamic Details
#90