I spent a good part of the day with my brother and nieces on a nature / history field trip. We started at our local Blue Heron rookery where we were fortunate to find a number of birds on their nests. Next, we embarked on a Revolutionary War history tour starting at the Old North Bridge and ending on the Battle Green in Lexington.  The Concord River was as high as I have ever witnessed and the path on the far side of the bridge was inundated.