Effects of Weather on Breeding Ducks in North Dakota

Acknowledgments

We are grateful to the many persons who gathered field data and assisted in other ways. Nesting studies were initiated at Salyer in 1936 by E. R. Kalmbach. Special credit is due L. M. Kirsch, who was involved early in the Salyer studies, was responsible for virtually all the Woodworth data, and encouraged the completion of this report. We benefited from reviews of the manuscript by C. W. Dane, E. A. Driver, H. F. Duebbert, L. M. Kirsch, G. L. Krapu, H. Milne, D. G. Raveling, D. W. Sparling, D. Q. Thompson, and two anonymous reviewers.

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