Again, I'm not saying that bird should be sold. Because it shouldn't. Or even left with the original flock for that matter. And while you, and I feel the bird should be culled in the killing sense, OP isn't comfortable with that
I agree:) . But I was defining what culling is. I still believe that bird should be culled (in the killing sense) or at the very least, physically removed from the flock and placed in a different enclosure
Cull doesn't mean kill. It simply means remove from the breeding flock. That may be rehoming, removing from the flock completely, killing, or simply not breeding these birds. This is not something you caused. In this case it's genetic
Teenage hormones are never this extreme. Do you have pictures? Even for a broody this is extreme behavior, but is there any chance she's broody? How does she act with the rest of the flock