I have a 6 month old bantam pullet who began limping on 1 of her legs about 6 weeks ago. I immediately removed her from the flock and put her in a cage in my garage. At first, she wouldn't attempt to put weight on the leg at all. After about 4 weeks of increased vitamins/minerals/protein, she slightly improved. By that time, I had read about Vitamin B and leg issues...so I began giving her injections of Vitamin B. After only a couple of injections, she had improved a lot. She's now putting weight on the leg and walking with only a very slight, barely noticeable, limp. Her weight has improved...but she never did get really thin. And her face and comb have even reddened up as if she's ready to begin laying. Throughout all of this, she's been very alert, content, and all around normal. But when I was examining her yesterday, I felt the "injured" leg and noticed that it basically had no muscle mass to it whatsoever (compared to her good leg)...it was almost like there's just bone and nothing else. I'm at a loss on what the issue could be, unless it is actually is a vitamin B deficiency.