Author: E. R. Kalmbach
Publisher: Forgotten Books
Published: 2017-11-18
Total Pages: 46
ISBN-13: 9780331349801
DOWNLOAD EBOOK →Excerpt from Crow-Waterfowl Relationships: Based on Preliminary Studies on Canadian Breeding Grounds Twenty-one additional nests under observation in the vicinity in 1934, situated at a number of small lakes, sloughs, and pot holes were all within easy reach of crows and such other disturbing factors as dogs and livestock. 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.
Author: Clarence Elbert Clement
Publisher:
Published: 1937
Total Pages: 11
ISBN-13:
DOWNLOAD EBOOK →Author: Lyle K. Sowls
Publisher: Stackpole Books
Published: 2017-09-15
Total Pages: 210
ISBN-13: 0811766721
DOWNLOAD EBOOK →The success of duck hunters throughout much of North America each fall depends to a large degree upon the spring productivity of the breeding waterfowl in the northern prairie states and the central provinces of Canada. In southern Manitoba, in the Waterfowl Research Station, a privately endowed outdoor laboratory owned by the North American Wildlife Foundation and operated by the Wildlife Management Institute. Its principal purpose is to determine facts useful in the management and perpetuation of this international migratory resource. When Dr. Lyle K. Sowls began his studies at Delta in 1946, many wide gaps remained in the knowledge of the relationship of breeding ducks to their home range. There were many scattered observations and a growing mass of data accumulated through the study of banding returned; but the activities of individual ducks during the critical spring months and the activities and the fate of broods each summer remained largely a mystery. Sowls, working toward his doctorate in wildlife management as a graduate student of the University of Wisconsin, studied the waterfowl at Delta for five years in an attempt to plug some of those gaps through intensive study of the waterfowl on one limited are. His studies developed new techniques and brought out new facts that were startling even to waterfowl biologists, facts of prime importance to the duck hunter or to any one interest in the future of America’s waterfowl flights. As a result of Dr. Sowls’ research, new light has been shed on such factors as predation, renesting, and homing habits of the important species of game ducks, and already have become the basis for revised hunting regulations and give a new understanding of waterfowl problems.
Author: United States. Department of Agriculture
Publisher:
Published: 1936
Total Pages: 962
ISBN-13:
DOWNLOAD EBOOK →Author: United States. Bureau of Biological Survey
Publisher:
Published: 1939
Total Pages: 1320
ISBN-13:
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