| herring gulls and great black-backed gulls as indicators of contaminants in bald eagles in lake ontario, canada. | in 2000, a pair of bald eagles (haliaeetus leucocephalus) nested successfully along the shorelines of lake ontario in north america for the first time since 1957. however, it is a continuing question whether bald eagles will be able to reproduce successfully as they return to nest on lake ontario. great black-backed gulls (larus marinus) and herring gulls (l. argentatus) were selected as surrogate species to predict contaminant levels in eggs of bald eagles nesting on lake ontario. because of th ... | 2002 | 12013123 |