Author
Smithsonian Migratory Bird Center
6
Greenberg, Russell
4
Merriam, C. Hart (Clinton Hart), 1855-1942
3
Preble, Edward Alexander, 1871-1957
3
United States. Bureau of Biological Survey
3
Calverley, Brett K.
2
Casselman, Lisa M.
2
Cody, William J.
2
Davin, Nicholas Flood, 1843-1901
2
Dickinson, Dawn, 1930-2013
2
Doyle, David M.
2
Duchaussois, R. P. (Pierre Jean Baptiste), 1878-
2
Hazard, Gjon
2
Horetzky, Charles, 1840-1900
2
Luff, David Owen
2
Martell, A. M.
2
Mason, Michael Henry, 1900-
2
Porsild, A. E. 1901-
2