00000nam 2200000za 4500 9.849439 CaOODSP 20241203113641 cr ||||||||||| 180103s1977 oncb||||o f000 0 eng d CaOODSP eng n-cn--- CW69-9/75E-PDF Blokpoel, H., 1938- Gulls and terns nesting in northern Lake Ontario and the upper St. Lawrence River [electronic resource] / by H. Blokpoel. [Ottawa] : Canadian Wildlife Service, 1977. [7] p. : maps Progress notes ; no. 75 "July 1977." Digitized edition from print [produced by Environment and Climate Change Canada]. Issued also in French under title: Les goélands et les sternes qui nichent dans le Haut Saint-Laurent et le Nord du Lac Ontario. Includes bibliographical references. "Results of a survey in 1976 of Herring Gulls (Larus argen-tatus), Ring-billed Gulls (Larus delawarensis), Common Terns (Sterna hirundo), and Caspian Terns (Hydroprogne caspia) that nested in the Canadian parts of Lake Ontario and the upper St. Lawrence River are presented"--Abstract. gccst Birds gccst Behaviour Canada. Environment Canada. Canada. Pêches et environnement Canada. Canadian Wildlife Service. Les goélands et les sternes qui nichent dans le Haut Saint-Laurent et le Nord du lac Ontario (CaOODSP)9.859557 Progress notes (Canadian Wildlife Service) no. 75 (CaOODSP)9.504439 PDF 753 KB https://publications.gc.ca/collections/collection_2018/eccc/CW69-9-75-eng.pdf