Find information on spaces, staff, and services.
J. B. HARKIN, NATIONAL PARKS COMMISSIONER MIGRATORY BIRDS CONVENTION ACT HISTORIC SITES DEPARTMENT -OF THE INTERIOR NATIONAL PARKS OF CANADA OTTAWA IN YOU REPLY REFE To FILEPERSONAL. June 16,1930. Dear Leopold,- I was very much interested ih your beginning of a summary of drinking habits of game birds and mammals. Unfortunately, I am afraid that I have not much to add. There is a good deal of valuable information hidden in private note books, however, and I think that you might get good infor- mnation by encouraging observers to record what they have seen in places where it will be available to subsequent workers in the same field. To my mind there is always the danger of getting erroneous in- formation by sending out a simple questionnaire. The questions sometimes have the effect of being leading questions and of influencing the answers. This ob- jection does not arise where the obseiver records the things that he sees without any definite ques- tions before him. Perhaps it would help you to circul- arize such papers as "The Auk," The Journal of Mam- malogy," Eind the Canadian Field-Naturalist " and try to encourage observers to place on record facts re- lating to the water requirements of game. With kind regards, I remain Aldo Leopold., Esq., Yours very truly, In Charge, Game Survey, 421 Chemistry Building, Madison, Wisconsin, U.S.A.