I have even seen mom chucks attack and kill there offspring on occassion. That is why I cringe when I see people keep hatchlings with adults. Remeber that chucks are not social animals and that they usually only hang out in the breeding season. I think they may tolerate hatchlings for a bit but eventually chase them out of their territory. You WILL eventually have to house all your male seperately. I have seen adult males fight to the death if they cannot stay clear of one another.