Next week my hen will be 16 weeks old and will be put in with my other three hens. (2 red sex link, 1 black sex link). I did have three chicks and made the mistake of putting them togehter at 8 weeks, the big hens killed two. This was after I had their pen next to the big girls for 2 weeks, they had an "escape" area, etc. My almost 16 week old hen has been living next to the big coop since she was 8 weeks old and moved into the coop at night in a cage next to the big girls. They still try to peck her thru the wire and I am nervous about putting her with the big girls. My plan is to sneak her into the coop in the middle of the night and put her on the roost with the big girls. Does this really work? I can't see me doing it without waking the big girls but I'll do my best. Do you think they will kill her at 16 weeks like they did her sisters at 8 weeks? I plan on monitoring them closely when the sun comes up but am VERY nervous about this. Any advice would be greatly appreciated.