Yes, I have a duck with leg problems.
Quackers died this a.m. and Jesse is limping, but otherwise acting normal, so I'm assuming this is a niacin deficiency? Quackers was walking backwards sometimes on the first day I noticed her acting weird but after that was just .... I can't think of the right word to describe it ... lazy, I guess, but in a sick way. She would rest before going on with the others and, most of the time, was in the back of the line, struggling to keep up. She was resting/hiding in the daylily bush when I put the ducks in last night. I rarely saw her eating while she was sick, but she didn't look thin to me. I don't know if she had a niacin deficiency or not. I would bring her to the vet for a necropsy, but I just can't. I should have taken her to the vet before, but I thought it was only a niacin deficiency and she would be ok.
On the up side, I am finally getting purina flock raiser today. I am going to do some research to try to find out what Quackers had. If I see another duck acting like she did, they will go to the vet asap .... as long as he does ducks.
I miss my Quackburd so much. I don't think I'll ever change my avatar, unless it's to another picture of Quackers. I almost feel like changing my username, but I can only change it once, so I don't know about that. Poor little Quackers. I hope animals go to Heaven.
Sorry to hear about Quackers. Hopefully you get the problem figured out and fixed.