No reason to separate if no one is being injured. It's completely normal for adults to chase away younger birds. Putting in clutter to provide hiding places and putting feeders behind clutter so birds can't see when others are eating helps more than just putting out a lot of bowls: https://www.backyardchickens.com/threads/a-cluttered-run.1323792/
You are very close to maximum capacity for birds in the space so any clutter you add can't take up too much room, so think lighter or thinner objects instead of big heavy objects.
You are very close to maximum capacity for birds in the space so any clutter you add can't take up too much room, so think lighter or thinner objects instead of big heavy objects.
