I just noticed one of my hens has a paralyzed leg. The right leg spreads side way as seen the in this picture and seems completely paralyzed. Left leg still OK. She can hop around with one leg and look somewhat healthy, just not very mobile. She's from my breeding cage and has been a faithful layer. Probably too old to cull for meat. Plus, not too sure if she's sick. Any suggestion? Is this one of those diseases with birds? I notice that one of the younger bird (3 weeks old) in the lower brooder cage is showing weak legs too. I've seen weak legs before and read that it's a lack of vitamin B so I have been adding some vitamin B to their water the first couple weeks after hatch. Have not seen weak legs the last 2-3 months.