Hello! We are new to having ducks and chickens. We have a mixed group of chickens that are a few months old that we would like to add two black australops to. The other chickens tried to attack the new ones. Will they get along in time? We also have three pekins that are a couple of months old and we are trying to add two mallards to the group. The pekins kept trying to sit on them and bite them. Will this get better or will we have to keep them separate?