I got two Aruacana hens and an Aruacana rooster about 2 weeks ago now. They seem to be a little slow? Definatley not like any other chickens we've ever had. They sleep ontop of the coop even in the rain and even though they have free range during the day, they stay in one corner of the yard. They don't forage and they don't scratch around. I've tried putting them on the perches at night, but they don';t seem to get the idea. Do I have some thick chickens?