I got 6 chicks from TSC about 2 weeks ago. I assume that they are now 3 weeks. I have: - 2 barred rocks - 1 "americana" (probably an easter egger) - 2 Isa Browns - 1 red chick cross bred for production I also have 3 older Dorking chickens soon to be 2 years old. As many of you probably know dorking chickens are dual-purpose birds and weigh about 9 pounds. My chicks will never be as large as these birds just because of their breeds. When can I put the chicks in with the larger birds?