00000nam 2200000za 4500 9.855862 CaOODSP 20241203113642 cr ||||||||||| 180426s1986 bcc #ot f|0| 0 eng d 0-662-14909-2 CaOODSP eng eng fre n-cn-bc n-cn-yk CW69-5/8E-PDF McKelvey, Richard W. The status of trumpeter swans in British Columbia and Yukon, summer 1985 [electronic resource] / R. McKelvey. Delta, B. C. : Pacific and Yukon Region, Canadian Wildlife Service, Environment Canada, 1986. iii, 29 p. : maps. Technical report series ; no. 8 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographic references. "A survey was conducted in July and August 1985 to determine the status of Trumpeter Swans breeding in British Columbia and Yukon. A total of 185 adults (white birds) and 53 cygnets were recorded. All areas except the Ft. St. John area had fewer swans than in previous years. Possible causes of those changes are discussed. The most likely reason for the decline noted is high mortality on the wintering area near Yellowstone National Park, U.S.A."--Abstract, p. i. Includes abstract in French. gccst Migratory birds Canada. Environment Canada. Canadian Wildlife Service. Pacific and Yukon Region. Technical report series (Canadian Wildlife Service) no. 8 (CaOODSP)9.504438 PDF 1.08 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-8-eng.pdf CW69-5/8E