ACKNOWLEDGMENTS 465 



ACKNOWLEDGMENTS 



The extraordinary kindness and courtesy of the many people to 



whom I have had to apply for information and advice in the production 



of this work have been a constant source of inspiration. 



In many instances the information required took days to compile, 



yet it was prepared and forwarded in a spirit of co-operation and gen- 

 erosity that is difficult to credit, and which leaves the writer forever 



indebted. 



Advice, assistance and data of various kinds were received from 



the following gentlemen to whom I again express my deep gratitude for 



their invaluable aid: 



Alfred M. Bailey, The Colorado Museum of Natural History, Denver. 



J. L. Baillie, Jr., Cataloguer, Royal Ontario Museum of Zoology, 

 Toronto, Ont. 



Hector Bedard, Naturalist and Taxidermist, Ottawa, Ont. 



*Dr. Frank M. Chapman, Curator of Birds^ American Museum of 

 Natural History, New York, N. Y. 



F. C. Clarkson, Toronto, Ont. 



O. E. Devitt, Toronto, Ont. 



Prof. J. R. Dymond, Director, Royal Ontario Museum of Zoology, 

 Toronto, Ont. 



Dr. Ira N. Gabrielson, President, Wildlife Management Institute, 

 Washington, D. C. 



C. E. Gillham, Public Relations Div., Olin Industries, East Alton, 111. 



Dr. Francis Harper, Swarthmore, Pa. 



A. S. Hawkins, Game Technician, State Natural History Survey Divi- 

 sion, Urbana, 111. 



H. Albert Hochbaum, Director, Delta Waterfowl Research Station, 

 Delta, Man. 



*Prof. Aldo Leopold, University of Wisconsin, Madison, Wis. 



Frederick C. Lincoln, In Charge Distribution & Migration of Birds, 

 Division of Wildlife Research, Fish and Wildlife Service, Wash- 

 ington, D. C. 



Hoyes Lloyd, Former Supervisor of Wildlife Protection, Department 

 of Mines and Resources, Ottawa. 



Dr. J. W. MacArthur, Assoc. Prof, of Genetics, Department of Zoology, 

 University of Toronto. 



W. L. McAtee, Former Technical Adviser, Fish and Wildlife Service, 

 Washington, D. C. 



Robert C. McClanahan, Biologist, Fish and Wildlife Service, Washing- 

 ton, D. C. 



E. G. MacDougall, Librarian, Royal Ontario Museum of Zoology, 

 Toronto, Ont. 



Dr. A. H. Miller, Museum of Vertebrate Zoology, Berkeley, Calif. 



Manly F. Miner, Kingsville, Ont. 



James Moffitt, Curator, Dept. of Ornithology & Mammalogy, Calif. 

 Academy of Sciences, San Francisco, Calif. 



