How old are Roosters when they start being agressive? I have 3 bantam roosters and they are all getting along now but i wonder how long that will last.They were all raised as chicks together so I am hoping they will not start to fight, I got them this spring so they are about 7 mos. old now. 1 is a white silkie,1 is a black frizzle,and the other one looks like a traditional rooster. He's the smallest one and he has the most macho personality but is the sweetest one he lets me hold him and pet him. The other 2 are afraid of me and run away.