I was riding my bike around Heartwell Park, a park in Hastings, Nebraska with a lake and lots of ducks, mostly brown ducks like the one in the background of the first picture.  There was this one white duck with his feathers all spread.  I thought he was just stretching, but after several times around the lake on my bike (one mile each), the duck was still looking this "fluffy" way.  Maybe he was trying to attract a mate, or maybe he was just having a "bad feather day"?