I have 4 pekin ducks, 3 females and 1 drake, and 3 rouens 1 male and 2 females. My Rouen females are looking absolutely beat up there necks have badly any feathers, one of the has bumble foot. Is there anything I can do? More protean? Leave the drakes away from them? Anything because its starting to get bad, anything at all!? Please help me?