That is one of the breeds I have never had. I would make a place for the chicks to go into that the other birds can't get to so they have a safe place. I have dealt with broody's in the past and have had other birds chase the chicks but once they discovered the cage with a small opening where the larger birds couldn't get to them they would scramble into their safe place. I put some of their feed and water in it too with a heat source Such as a heating pad covered. You will find a lot of good information here

