My 9 week old Pekin has developed angle wing. She is going to the vet today to get it wrapped. I just want to know how should could have got this. I fed unmedicated chick starter, until she was feathered. Then I moved her outside with my male Pekin. I switched her to crack corn and lay pellets mixed. They also free range in my back yard. She didn't get this until about a week or so. What I am feeding now is low in protein. I just don't know why she developed this. When my male was a baby I feed the exact same thing with no issues. Also, if I get the problem corrected, could she develop it again later in life?