I have had my chicks 2 weeks, there growing like weeds, but I'm noticing some aggressive behavior. For the most part they all get along fine, but sometimes I go out there and they are chasing each other, jumping on each other, and sometimes are pecking each other. I just enlarged the brooder so they have more room, but it didn't seem to change the way there acting. There are only 6 hen chicks, but sometimes I swear I have a bunch of fighting roosters. Is this normal? Are they bored? Are they unhappy? I always have clean water, full feeder, a heat lamp, clean shavings, and they have a little roost they sit on. Any answers? Is this normal? Thanks for any help.