I just got back from a trip to the pristine wilderness of Michigan's upper peninsula. I Decided I had not gotten my fix for adventure yet. We decided to take a kayak trip down the Grand River. The pollution was awful, plastic everywhere, the water was a deep green, and some of the few ducks on the river had a discolored heads. It could of been because they were hybrids, but I have never heard or seen a duck with a purplish/green head in Michigan. This is the most normal looking duck on the river