00000nam 2200000za 4500 9.859363 CaOODSP 20241011162619 cr ||||||||||| 180719s1978 onca o f000 0 eng d CaOODSP eng eng fre n-cn--- CW65-8/42E-PDF Erskine, Anthony J., 1931- The first ten years of the co-operative Breeding Bird Survey in Canada [electronic resource] / by Anthony J. Erskine. Ottawa : Canadian Wildlife Service, c1978. 61 p. : ill. Report series ; no. 42 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "The co-operative Breeding Bird Survey (BBS) has been active in Canada since 1966. This report discusses the first 10 years (1966-75). The main objectives of the BBS are to detect and measure year to-year and long-term changes in populations of birds, particularly the smaller land birds"--Abstract. Abstract in French. gccst Birds gccst Population distribution Canada. Fisheries and Environment Canada. Canadian Wildlife Service. Report series (Canadian Wildlife Service) no. 42. (CaOODSP)9.858862 PDF 11.23 MB https://publications.gc.ca/collections/collection_2018/eccc/cw65-8/CW65-8-42-eng.pdf