00000nam 2200000za 4500 9.856262 CaOODSP 20241203113642 cr ||||||||||| 180508s1989 oncd o f00| 0 eng d CaOODSP eng eng fre n-cn-on CW69-5/52E-PDF Ross, Richard Kenyon. A re-survey of migrant waterfowl use of the Ontario St. Lawrence River and northeastern Lake Ontario [electronic resource] / R. Kenyon Ross. Ottawa : Canadian Wildlife Service, Ontario Region, 1989. iv, 25 p. : charts. Technical report series ; no. 52 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "In 1985 and 1986, a repeat survey of migrant waterfowl use was undertaken along the Ontario St. Lawrence River and northeastern Lake Ontario in order to supplement and update the findings of the original 1976/7 survey. As in that work, the birds were counted from a small fixed-wing aircraft flying a standardized route on a similar schedule. The route was divided into 12 zones and the results summarized as waterfowl days for each species group (geese, large and small dabblers, bay ducks, goldeneye, sea ducks, mergansers); comments on individual species are made where possible"--Abstract. Includes abstract in French. gccst Birds gccst Migration Waterfowl Canada. Environment Canada. Canadian Wildlife Service. Ontario Region. Technical report series (Canadian Wildlife Service) no. 52. (CaOODSP)9.504438 PDF 1.70 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-52-eng.pdf