00000nam 2200000za 4500 9.857365 CaOODSP 20241203113643 cr ||||||||||| 180605s1993 oncb o f00| 0 eng d CaOODSP eng eng fre n-cn-on CW69-5/181E-PDF Blokpoel, H., 1938- Atlas of colonial waterbirds nesting on the Canadian Great Lakes, 1989-1991. Part 1, Cormorants, gulls and island-nesting terns on Lake Superior in 1989 [electronic resource] / Hans Blokpoel, Gaston D. Tessier. [Ottawa] : Canadian Wildlife Service, Ontario Region, 1993. iii, 96 p. : maps. Technical report series ; no. 181 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (p. 19-20). "During the 1989 breeding season, an inventory was made of Double-crested Cormorants (Phalacrocorax auritus), Ring-billed Gulls (Larus delawarensis), Herring Gulls (L. argentatus), and Common Tems (Sterna hirundo) nesting in the Canadian portion of Lake Superior. The field work was a cooperative effort by the Canadian wildlife Service, the Ontario Ministry of Natural Resources, Pukaskwa National Park and contractors hired and trained by CWS. Islands were visited by boat and all active nests were counted using hand counters. Caribou Island located sorne 60 km offshore was not part of the study area"--Abstract. Issued also in print format. Includes abstract in French. gccst Aquatic Birds Tessier, G. D. Canada. Environment Canada. Canadian Wildlife Service. Ontario Region. Atlas of colonial waterbirds nesting on the Canadian Great Lakes, 1989-1991 : (CaOODSP)9.610604 Technical report series (Canadian Wildlife Service) no. 181. (CaOODSP)9.504438 PDF 2.49 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-181-eng.pdf