I have 15 ameraucana that have to be the some of the friendliest chickens I have ever owned. Have never seen them being agressive towards each other. No injuries, plucked feathers, blood or anything. But having said that .... everyday I find their waterers flipped over, the poly that was stapled to the walls is torn down. Three times in the last week their feeder was flipped over. The waterers are about 20 lbs when full. The feeders are over 4 feet long. It is like when I am away their are wrestling matches or some pretty wild parties going on in the coop. Anytime I am around they are always calm, cool and collected. They are far from overcrowded. 15 chickens and over 200 square feet of coop space. Access to outside. This started about 3 weeks ago. They are locked up securely at night. Concrete floor so nothing can dig in. I am at the point of buying a cheap surveilance cam so I can watch chicken TV and find out what is going on! Maybe if it is entertaining enough I can feed it to the internet and make some money off the little buggers! LOL Any thoughts on this folks.