I am introducing a clutch of 11 hybrid welsummers into a mixed flock of 12 pullets and 1 Naked Neck Rooster (about 14 wks). I have a large wire dog kennel that I have taken the bottom guard out and placed outside by the existing coop so the existing flock will get used to their site, sound and smell. I also read that if a rooster is still young that he will take the new youngsters under his care and protect them from the hierarchy of hens. So for about 20 min a day I will put the rooster in with youngsters so he gets used to them and I remove the food (so the rooster does not injure the chicks by establishing his rank just yet) but keep the water. Since the newbies are locked up and the others free range they will naturally be at the lower end of the pecking order (so I have read). After about a week I will clean the coop and disinfect to reduce the risk of disease, since the youngsters will be about 11 wks at that time, and introduce them to the flock at night on the unoccupied roosts. I am still very new to the introduction process but thought from me research I would combined the working strategies for a more smooth transition. Your insight and constructive criticism are much appreciated. Thanks.