Hi, all. I have two 12-week old male Rouen ducks who sleep in a coop with 13 Buff Orpington hens and free range all day. About 2 weeks ago, we noticed that the ducks were beginning to lose feather on their undersides, and it has progressed so that there are barely any dark outer feathers underneath their wings and across their bellies. Is this normal for ducks of this age, or is something else going on? On one occasion I went out to the coop after dark to close things up, feed my flock, etc. and I noticed that a few of the chickens were going up to one of my ducks and pecking at it. The duck didn't seem to care too much, didn't squack or run away, but it made a lightbulb go off in my head -- is it possible that the chickens are doing this to the ducks? And if so, what do I do about it? Thanks in advance.