Feathered legs are becoming more common. Its a defect.
There is a guy in Canada who actually breeds them and has developed lines that hold the leg feathering very well called Snyder Ducks.
I hatch 2-6 per year form my ancona duck flock but most do not feather out as adults. They lose the leg...
Yup, those are feathered legs!
Nothing to worry about, they shouldn't effect him in any negative way
Very cool though as you don't often see feathered legs in ducks!
Feathered legs are not a common ocurance in ducks.
I've seen it a few times, one was a khaki campbell mix and the other was a cayuga
It shouldn't interfere with the health of the duck in any way so there's nothing to worry about. You just have a special duck thats different than most