Jonathan Alderfer

• Field Guide to Birds Arizona & New Mexico
• Field Guide to Birds the Carolinas
• Field Guide to Birds Colorado
• Field Guide to Birds Maryland & Washington, D.C.
• Field Guide to Birds Michigan
• National Geographic Complete Birds of North America
• National Geographic Field Guide to Birds North America
• National Geographic Guide to Birding Hot Spots of the United States
• Field Guide to Birds New Jersey
• Field Guide to Birds New York
• Field Guide to Birds Pennsylvania
• Field Guide to Birds Texas
• Field Guide to Birds Washington & Oregon