this evening I found one of my black easter eggers dead. None of my chickens have had any symptoms to make me think it was disease. She had some feathers missing from her back. When I tried to get her out of the pen the rooster flipped out, jumped on her pulling feathers and scratching. My daughters kindergarten class hatched chicks last april. This roo is one of those chicks. I dont know what breed he is but he is black and really big. I need some opinions.. Do you guys think it was the rooster that killed her?