I have 4 brahmas (1 roo, 3 pullets about 17-18 weeks old) and 6 chicks (4 SLW and 2 barred rocks) about 9 weeks old. The chicks are in a dog kennel in the coop with the bigger kids. I let the littles have free range of the coop when the big kids are in the yard. I also have an area for them to play outside. When they're outside, my big kids like to watch them and will sometimes stay very close to where they are and circle around the area the babies are in. 2 of the pullets are scared of the baby roo, who puffed up his chest and chased them. The other pullet is my alpha and has tried to peck them; my brahma cockerel has tried to peck the little roo. Anyways, when can I try to integrate them? My brahmas are massive in size compared to the little ones. I know I need to wait until the littles are bigger, preferably closer to the same size, but will they get as big as brahmas? I don't intend to let them out together any time soon. One of the babies got out of the coop yesterday and my alpha pullet chased her down.