I have a Cornish Rock that is huge. She's bigger than my other full grown Cornish Rocks have been, and she has trouble walking or standing for more than a minute or two. She almost acts as though her legs won't support her weight, even though her legs and feet are also quite large. I've been careful about splay leg for all my new chicks, and I'm pretty sure it's not that. She has a very healthy appetite and drinks water just as much as the others. I'm starting to think that she has some kind of genetic growth defect (I've been calling her Andre the Giant, so maybe my imagination has gotten away with me). Can anyone shed some light on what might be wrong?