I have two sweet Barred rock and Buff Orpington hens (about 3-4 months old, 3lbs) in the coop outside. I also have a very small but also 3 month old bantam red couchin bird that is in a basement cage (she is about 1lb). Every time I try to put the bantam bird in the coop, the full sized chickens stare her down for 2 minutes and then begin to very aggressively peck at her, and the poor thing just sits there and doesn't move! Last time I tried, they pecked her eye very badly and she screamed so I stop trying to integrate the flock. Any one have any advice?? I realize there is a 1-week adjustment and that a pecking order needs to be formed, but will they every be compatible?