. The Canadian field-naturalist. 1999 Burnett: Chapter 8: Wildlife Toxicology 133. Members of the pesticide unit Pierre Mineau (L), Celine Boutin, Alain Baril, and an associate evaluate company data for pesticide registration (Photo credit: CWS). Indeed, mercury resurfaced during the 1990s as an ongoing source of concern, both as a direct byprod- uct of human activity and in areas where the toxic metal was released into lakes and streams from soils and exposed rock. In the Quebec Region, the cre- ation of large reservoirs behind the dams of the James Bay hydroelectric power development provid-
. The Canadian field-naturalist. 1999 Burnett: Chapter 8: Wildlife Toxicology 133. Members of the pesticide unit Pierre Mineau (L), Celine Boutin, Alain Baril, and an associate evaluate company data for pesticide registration (Photo credit: CWS). Indeed, mercury resurfaced during the 1990s as an ongoing source of concern, both as a direct byprod- uct of human activity and in areas where the toxic metal was released into lakes and streams from soils and exposed rock. In the Quebec Region, the cre- ation of large reservoirs behind the dams of the James Bay hydroelectric power development provid- ed an unusual opportunity for research. Jean-Luc DesGranges and Jean Rodrigue analyzed blood and feather samples from Ospreys to determine whether these fish-eating top predators were suffering adverse effects from mercury released from organic debris on the flooded lands.^^ In another study, the Common Loon was selected by an international research team of Canadian and American biologists as an ideal indicator species for study. Starting in 1991, samples of blood and feath- ers were taken from loons in five regions of North America: Alaska, the northwestern United States, the Great Lakes, New England, and the Maritime provinces.^^ The principal CWS participants in this project were Neil Burgess in the field and Tony Scheuhammer at the National Wildlife Research Centre. Tony Scheuhammer and Sean Kennedy joined the research team at the National Wildlife Research Centre in the early 1990s. In addition to his work with mercury in loons, Scheuhammer became a major contributor to the broad discussion of heavy metals in the environment, and especially the prob- lem of lead poisoning in birds as a result of the ingestion of spent shot. Given the CWS mandate to conserve and protect migratory game birds, this was a particularly important and sensitive topic. As early as the 1970s, Nolan Ferret had conducted lab- oratory and field experiments in an effort to find an acceptable substitut
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