Hi. I have 14 chicks who will be moving into their coop in the next 2 weeks and was going to brood some guinea keets once the brooder was empty of chicks. My question is would it be best to introduce the guineas to an established chicken coop or go ahead and et a few and put them in with the chicks (oldest is 4 weeks old)? Like chicks, do they need to be fully feathered before moving them to the coop? I was only going to get 3 or 4 of them. Thanks.