00000cam 2200000za 4500 9.855588 CaOODSP 20241203113642 cr ||||||||||| 180419s1978 oncd|||#o f00| 0 eng d CaOODSP eng eng fre n-cn-sn CW69-1/34E-PDF Sugden, Lawson G. Canvasback habitat use and production in Saskatchewan parklands [electronic resource] / by Lawson G. Sugden. Ottawa : Fisheries and Environment Canada, Canadian Wildlife Service, c1978. 32 p. : charts. Occasional paper ; no. 34 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Habitat use and production by Canvasbacks (Aythya valisineria) were studied during 1971-75 on a 31.1·km2 block (15.54 km2 in 1971 and 1972) of Saskatchewan parkland to determine the extent that habitat might be limiting production of young"--Abstract. Includes abstract in French. gccst Aquatic birds gccst Habitats Canvasback Canada. Environment Canada. Canada. Fisheries and Environment Canada. Canadian Wildlife Service. Occasional paper (Canadian Wildlife Service) no. 34 (CaOODSP)9.504780 PDF 1.92 MB https://publications.gc.ca/collections/collection_2018/eccc/CW69-1-34-eng.pdf