00000nam 2200000za 4500 9.850365 CaOODSP 20241203113641 cr ||||||||||| 180119s1992 oncb||||o f000 0 eng d CaOODSP eng n-cn--- CW69-9/199E-PDF The cooperative Breeding Bird Survey in Canada, 1989-91 [electronic resource] / Anthony J. Erskine ... [et al.]. [Ottawa] : Canadian Wildlife Service, 1992. 14 p. : maps. Progress notes ; no. 199 "May 1992." Digitized edition from print [produced by Environment and Climate Change Canada]. Issued also in French under title: Étude collective des populations d'oiseaux nicheurs au Canada, 1989-1991. Includes bibliographical references. "The Breeding Bird Survey (BBS) has grown from an experimental survey in two U .S. states in 1965 to the most widespread and widely accepted means of monitoring breeding bird numbers in the United States and Canada"--Introd. gccst Birds gccst Population gccst Surveys Erskine, Anthony J., 1931- Canada. Environment Canada. Canadian Wildlife Service. Étude collective des populations d’oiseaux nicheurs au Canada, 1989-1991 (CaOODSP)9.860891 Progress notes (Canadian Wildlife Service) no. 199 (CaOODSP)9.504439 PDF 791 KB https://publications.gc.ca/collections/collection_2018/eccc/CW69-9-199-eng.pdf