I found this in my poop board this morning I have six ex battery hens since beginning of March this year, at first we were getting six eggs a day then it went down to one or two a day ( to be expected after all they had been through) for the last two weeks its up to five a day then this morning I found this it was warm and soft, obviously dead as its head was not fully formed and I have no idea how it even happened as I dont have a rooster all the hens are eating drinking well any ideas