Monday, March 19, 2012

American Bald Eagle: an Environmental Indicator

This eagle is carrying its favorite food: a fish.  We are seeing a lot of eagles on the shores of the Great Lakes since DDT and like pesticides were banned.  Since eagles are an environmental indicator, the environment is healthier than it was.  The problem with DDT is that it builds up in food chains.  Food chains in water are long.

Read more about Great Lakes phenomena in my book: The Dynamic Great Lakes. 

Photo by Steve Damstra

The Dynamic Great Lakes is  widely available on the web and in stores such as Barnes & Noble, the Bookman in Grand Haven and other independent bookstores.

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