We let our chicken free range most of the time and the last two days the have been locked up in the run. So today I notice when I let them out they were all going after each other at first. I guess they have been locked up and just tired of each other lol. But tonight while doing yard work the kids was feeding them oatmeal one of their favorite treats when I watch the roster attack 3 chicken trying to pluck out feathers. Then the last straw was when he attacked a 4th one ripped out like 4 or 5 feathers so I went after him to scare him. Is this normal or should I be prepared to make sunday dinner with this guy? they are only 4 or 5 months old and all have been raised togther we have 13 chickens 1 being the rooster. Thanks for any input.