Excerpt from Wildlife Research Progress, 1961 The Bureau of Sport Fisheries and Wild life has broad authority for research on an array of wildlife species, resident and migratory, game and nongame, harmful and beneficial. The Branch of Wildlife Research is the wildlife fact-finding arm of the Bureau. It performs research in the areas of waterfowl management, other migratory bird studies, upland wildlife, pesticide-wildlife relations, diseases and parasites, control methods, and classifica tion, distribution, and life history studies. The Cooperative Wildlife Research Unit Program is one of many cooperative pro grams participated in by the Branch. These Units are supported and administered under terms of memorandums of understanding signed by representatives of the Bureau, the Wildlife Management Institute, and the land grant colleges and the fish and game departments of 16 States. The Unit Pro gram, in addition to conducting research, facilitates wildlife training and promotes conservation education through demonstra tions, publications, lectures, and consulta tion. The assistance and support of the Wildlife Management Institute and of the cooperating States in the Unit activities mentioned in this report are gratefully acknowledged. Many of the findings recorded here are preliminary, and readers wishing more detailed information are requested to write to the Bureau or to the Units, listed in Appendix A. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.