Hi I have a 12wk old & an 8wk old pullet and the last batch of 3 hatchlings produced by the look of them 2 cockerels and 1 hen. I tried to introduce them to each other but the two 5wk old cockerals squared up to the two older hens and we had to separate them and put the cockerels back in their pen. We have put the 5wk old hen in with the older ones and they are just fine. What can I do about the two cockerels if they continue to be aggressive towards the others. They are not fighting each other at the moment. Any help appreciated. Thanks.x