I come home this afternoon to feed my birds and let some free range to find 4 jumbo cornish cross got out of the pen and were in the yard. Two of them were missing feathers. The other was not too bad and moving along fine, eating and drinking. This one was huddled trying to get in with my laying hens with his eyes closed and shaking. I took him to a table to examine him, clean him up and assess the damage. Obviously, he had bruising, lacerations and a wing is hanging with tendons exposed. Ants were on him too. He was too far gone and had to go to chicken heaven. I have had problems with cats in the past, but this seems more like my boxer got intrigued. He likes to pounce and paw. (I don't let them free range unless I am out there to make sure he is under control). Do yall agree this is most likely the boxer? PS: I found the spot in the door they get out from, so will not be the problem anymore.