Always solve for the happiness of the flock...but try it first. Pull her out of the flock, and watch the flock for a couple of days, one of two things will happen, the flock will calm down. Now this can happen either because you have a better number of birds in your coop, or because you get rid of an aggressive hen.
If you want to know, put the aggressive hen back in, and pull another bird. If the flock remains calm and at peace, that is a better number for your set up and your flock.
Sometimes though, a weird thing will happen, after removing the bully, another hen will bully the victim. Then try pulling the victim.
It doesn't happen very often, and sometimes it happens are various levels, but sometimes there is a bird that just does not fit in the flock. Culling is a good answer.
If you don't want to cull, making sure that there are hideouts, roosts, multiple feeders, mini walls where birds can get away from each other or out of sight will also help.
mrs K
If you want to know, put the aggressive hen back in, and pull another bird. If the flock remains calm and at peace, that is a better number for your set up and your flock.
Sometimes though, a weird thing will happen, after removing the bully, another hen will bully the victim. Then try pulling the victim.
It doesn't happen very often, and sometimes it happens are various levels, but sometimes there is a bird that just does not fit in the flock. Culling is a good answer.
If you don't want to cull, making sure that there are hideouts, roosts, multiple feeders, mini walls where birds can get away from each other or out of sight will also help.
mrs K