I had my welsh harlequin drake at the fair a couple of weeks ago and he won best duck, woohoooo, and he was up for best in barn but later that day when the judge went in to look at him he had lost some of his green head feathers. We were thinking he got into a miff with another drake but now he is home and he has almost lost all his green head feathers? He is just shy of a year old, is he molting? Any ideas? He certainly i not sick, he has been a monster since he has been home, mating with everyone and chasing his cayuga buddy away!