Hello, Well next week we will be adding in our 9 week old chickens to the coop with our two redstar 15 month old chickens. Does anybody know if this should be okay? I read another story were a hen killed a 9 week. But I've never heard of that before so do you think it should be okay? Please let me know if you've had any experience? At first when we added the chicks in when they where about a week they just ignored pecky(white star) then we had to get another one. So please let me know. Thank you! Edit: We have shown them to each other several times when ever we take them out of there coop. And they seem just fine together.