00000nam 2200000za 4500 9.856397 CaOODSP 20241203113643 cr ||||||||||| 180510s1989 oncd o f00| 0 eng d CaOODSP eng eng fre n-cn--- CW69-5/75E-PDF Collins, B. T., 1949- The Breeding Bird Survey in Canada 1966-1983 [electronic resource] : analysis of trends in breeding bird populations / B.T. Collins, J.S. Wendt. Ottawa : Canadian Wildlife Service, 1989. 81 p. : charts. Technical report series ; no. 75 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Results from the Breeding Bird Survey are used to study changes in population of birds in Canada over the period 1966 to 1983. Although some patterns are apparent, such as a decline of many grassland and wetland species in the Canadian prairies, the results are generally more complex. There is a mixture of increases and decreases in population that varies by species and regions"--Summary. Includes abstract in French. gccst Birds gccst Population distribution Wendt, J. S. Canada. Environment Canada. Canadian Wildlife Service. Technical report series (Canadian Wildlife Service) no. 75. (CaOODSP)9.504438 PDF 3.61 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-75-eng.pdf