When can I put them all together?

[elrod]

I have 13, 5 month old Barred Rock hens, just started laying, We also have 13, two month old Buff Orf. I put them together about three days ago and all seemed well until today. The older hens killed two before I got to the coop this morning. I have srperated them, will I ever be able to put them together? Thank You

 

[KMHunter]

The younger ones will have to be approximately the same size as the older ones before you can put them together. BR's can bealittle aggressive with other chickens. When they are relatively close in size, put them together for short supervised times for awhile, or the best thing to do is to create a barrier that they can see each other through but cannot get at each other, for a week or two. Good luck!