Friday morning I photographed a very cooperative leucistic American Bittern. I think its abnormal coloring (or lack of it) made it a strikingly beautiful bird. You can see photos and read about this encounter and a similar (or the same?) bird crossing the road in the same spot 8 years earlier here: http://www.jimblockphoto.com/2016/05/leucistic-bittern/
Jim Block
Etna, NH