Author
David Sibley, 1961-
3 results
Paul E. Lehman
3 results
American Museum of Natural History
2 results
Cornell University. Laboratory of Ornithology
2 results
Donald W. Stokes
2 results
Jonathan K. Alderfer
2 results
Kenn Kaufman
2 results
Michael DiGiorgio
2 results
National Geographic Society (U.S.)
2 results
Noah K. Strycker
2 results
Anne Schmauss
1 results
Bill Thompson, 1962-
1 results
Danielle Belleny
1 results
Edward S. Brinkley
1 results
Geni Krolick
1 results
Ian Lewington
1 results
Jack L. Griggs
1 results
John Farrand
1 results
Jon L. (Jon Lloyd) Dunn, 1954-
1 results
Julie Zickefoose
1 results
Kevin Karlson
1 results
Lillian Q. Stokes
1 results
Lynn Hassler
1 results
Mary Schmauss
1 results
Miklos D. F. Udvardy, 1919-
1 results
Nancy J. Hajeski, 1951-
1 results
Nathan Pieplow
1 results
National Audubon Society
1 results
National Wildlife Association
1 results
National Wildlife Federation
1 results
Nora Bowers
1 results
Pedro Fernandes, 1976-
1 results
Pete Dunne, 1951-
1 results
Reader's Digest Association
1 results
Rick Bowers, 1960-
1 results
Roger Tory Peterson, 1908-1996
1 results
Scott & Nix (Firm)
1 results
Steve N. G. Howell
1 results
Will (Will Conor) Russell, 1941-
1 results