The bald eagle population has made a stunning recovery in many parts of the Great Lakes over the past 50 years. The iconic birds were driven to the brink of extinction in the 1960s by the insecticide DDT, which caused reproductive failure and eggshell thinning.
Banning DDT led to cleaner fish in the Great Lakes region, which allowed bald eagles to thrive. The presence of baby eagles along the north shore of Lake Ontario is another sign that the Great Lakes are now much cleaner than they were a half century ago. Read more about the bald eagles in Hamilton here.