00000nam 2200000za 4500 9.856764 CaOODSP 20241203113643 cr ||||||||||| 180518s1990 bccb ob f000 0 eng d 0662184807 0831-6481 CaOODSP eng eng fre n-cn-bc n-cn-yk CW69-5/115E-PDF CW69-5/115E McKelvey, Richard W. The status of trumpeter swans in British Columbia and Yukon, summer, 1990 [electronic resource] / R. McKelvey, J. Hawkings. Delta, B.C. : Canadian Wildlife Service, Pacific and Yukon Region, 1990. iii, 27 p. : col. maps. Technical report series ; no. 115 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (p. 11). "A survey of breeding Trumpeter Swans (Cygnus c. buccinators) was conducted in British Columbia and the Yukon in 1990. Survey routes were similar to those used in the 1985 survey, with the addition of one new route in the Beaver Creek area of the Yukon. A total of 322 adult (white) swans and 125 cygnets was seen. That represents an increase of 87.8% since 1985. Productivity in 1990 was 28.0%. Habitat conditions were good to excellent. Survival appears to be good in spite of the difficulties reported on wintering areas in the Wyoming-Montana-Idaho area of the United States"--Abstract. Issued also in print format. Includes abstract in French. Trumpeter swan Bird surveys British Columbia Yukon Hawkings, J. Canada. Environment Canada. Canadian Wildlife Service. Pacific and Yukon Region. Technical report series (Canadian Wildlife Service) no. 115. (CaOODSP)9.504438 PDF 2.77 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-115-eng.pdf