Hi everyone, I haven't been on here in a very long time but I find myself needing some help with a friends duck. The duck is a Pekin male and has limped some since they got him as a duckling. He is 6 months old and has lived in the house at night and out during the day so he's not acclimated to the weather very well. As of late his limp had gotten really bad and he had a sore ( looks like bumblefoot but on the back of his "knee" NOT foot/ankle area). I had them clean it out and take the core out and started him on Tylan 200 for infection as it was warm to the touch. This has cleared up very well,and has just a surface scab now with good healthy pink skin underneath. Shortly after that cleared up he got pneumonia and needed treating with Tylan again. He is over that as well but there has been no improvement in his walk.In fact, he has lost control in his other ankle it seems. He ends up not moving much but when he does, he is lying on his belly, wings outstretched and scooting.....or he limps horribly and flaps like crazy to move forward. Diet as far as I know has always been Purina Flock...18 % protein. I advised her to get a lower protein so she got Dumor Layer from TSC. I am at a loss as to how to help. My husband and I took the duck in to try and make a brace for his one leg, (we thought he might have broken it at one point but now not so sure) the joint is swollen and has the scab ( like bumblefoot) on it. That's the leg he doesn't use...the other in the last two days now buckles at the ankle Could this be diet related? or am I hoping for the best? If it was my duck, he would have been culled but this is their pet...so I'd like to try harder to get him better. As it is right now, he has stained under feathers and has to be put in the tub to bathe because he can't get into anything on his own. I need suggestions on what it could be from and also what vitamins would be the best benefit for him... Thanks so much in advance!