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Bioaccumulation and Effects of PCBs on Tree Swallows Nesting along the Housatonic River, Massachusetts

Research at the Upper Midwest Environmental Center, which gathered detailed observations on tree swallow nesting success and contaminant concentrations in 1998-2000, to guide EPA and the U.S. Fish and Wildlife Service in effectively managing the risk of chemical contaminants to wildlife and the environment.

  • Warning sign near the Housatonic River