{"id":4560,"date":"2026-07-15T14:14:25","date_gmt":"2026-07-15T18:14:25","guid":{"rendered":"http:\/\/bpac.algomau.ca\/?page_id=4560"},"modified":"2026-07-15T14:14:26","modified_gmt":"2026-07-15T18:14:26","slug":"bird-and-animal-deformities-or-reproductive-problems-bui-5-canadian-status","status":"publish","type":"page","link":"http:\/\/bpac.algomau.ca\/?page_id=4560","title":{"rendered":"Bird and Animal Deformities or Reproductive Problems (BUI #5) Canadian Status"},"content":{"rendered":"\n
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Current Status: Not Impaired <\/h2>\n\n\n\n

Bird and Animal Deformities or Reproductive Problems is no longer considered a concern within the Canadian portion of the St. Marys River Area of Concern.<\/p>\n\n\n\n

The studies completed for this BUI provide strong evidence that local wildlife populations are healthy, reproducing successfully, and not being adversely affected by environmental contamination. Continued environmental stewardship and monitoring help ensure these positive conditions are maintained for future generations.<\/p>\n\n\n\n

Why This BUI Was Listed<\/strong><\/h2>\n\n\n\n

When the Stage 2 Remedial Action Plan was developed, there was not enough information available to determine whether birds and other wildlife in the St. Marys River Area of Concern were experiencing deformities or reproductive problems linked to environmental contamination.<\/p>\n\n\n\n

At the time, only a small number of observations had been documented, including three cross-bill common tern chicks observed on Lime Island in 1998. Because a comprehensive assessment of bird and animal populations had not yet been completed, this beneficial use was categorized as “Requires Further Assessment.”<\/p>\n\n\n\n

Scientists recognized that contaminants such as PCBs, mercury, dioxins, furans, and other persistent pollutants had caused reproductive problems in wildlife elsewhere in the Great Lakes. Additional monitoring was needed to determine whether similar impacts were occurring in the St. Marys River.<\/p>\n\n\n\n

What Has Changed<\/strong><\/h2>\n\n\n\n

To better understand the health of local wildlife populations, Environment and Climate Change Canada’s Ecotoxicology and Wildlife Health Division conducted four years of research on colonial waterbirds within and outside the Area of Concern.<\/p>\n\n\n\n

Researchers examined common terns and herring gulls, assessing:<\/p>\n\n\n\n