One of My EE bantam roosters has gotten so he can only walk with the leg from the hock down resting on the ground. This is the third rooster that has gotten so they can't walk. The other 2 were standard brahmas that were brothers. They sort of had balance problems and I put them down. Now this one is haveing problems. None of the hens have had problems. Any ideas of what is the problem and how it should be treated. Am i going to have to get rid of the whole Flock? Help!