00000nam 2200000za 4500 9.849652 CaOODSP 20241203113641 cr ||||||||||| 180108s1979 oncd||||o f000 0 eng d CaOODSP eng n-cn--- CW69-9/104E-PDF Sugden, Lawson G. Preliminary measurements of grain wasted by field-feeding mallards [electronic resource] / by Lawson G. Sugden and D. Wayne Goerzen. [Ottawa] : Canadian Wildlife Service, 1979. 5 p. : charts Progress notes ; no. 104 "November 1979." Issued also in French under title: Estimations préliminaires du gaspillage de grains par les canards malards qui s'alimentent dans les champs. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "When waterfowl, particularly ducks, feed on swathed grain they not only eat the grain but also waste some by trampling and fouling. To the farmer who loses both ways, it matters little whether the grain is eaten or wasted. It is, however, of concern to the crop protection manager, who tries to make the most efficient use of lure crops, and who must evaluate feeding programs in terms of benefit/cost"--Introd. gccst Birds gccst Grains gccst Measurement Goerzen, D. Wayne. Canada. Environment Canada. Canadian Wildlife Service. Estimations préliminaires du gaspillage de grains par les canards malards qui s’alimentent dans les champs (CaOODSP)9.860119 Progress notes (Canadian Wildlife Service) no. 104 (CaOODSP)9.504439 PDF 294 KB https://publications.gc.ca/collections/collection_2018/eccc/CW69-9-104-eng.pdf