Anatomy of a Toxic Spill: The Hudson River PCB StoryLoading Next Slide
Bird in Hand A study of tree swallows by the U.S. Fish and Wildlife Service found the highest recorded levels of PCBs in swallows near the capped remnant deposits upstream of the former Fort Edward Dam. Many birds were unable to build normal nests and often abandoned their eggs. In many cases the eggs were not viable. Others showed signs of transsexuality in their plumage and behavior. This bird was found with a crossed bill and a tumor. The condition of this tree swallow population points strongly toward PCB migration out of the supposedly secure riverside deposits.
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