I have learned to more than one rooster in a chicken yard is way too many.  I had six roosters at one time and those roosters choose one particular hen to show their attention too.  Poor hen had hardly any feathers left on her back in addition to lesions.  I was determined to rid the chicken yard of 5 roosters with a pole.  Of course being well into my 70 something year there was no way I could catch even one of them.  With the help of a grandson and a 'baby' brother, the deed was done and the poor hen healed.