For the last week, my 13 month old Roo is actting quiet strange. He goes into the coop backs into a corner under the nesting boxes and growls? What is he doing? He isn't aggressive about it, just squats down and growls. Sometimes there are hens above him on the nests and sometimes there are not. Any idea about what he might be doing? It lasts anywhere from 5 minutes to 30 minutes. Then, life as usual, nothing different about his day. Thank you all.