I have two standard cochins who just don't seem to get fat, they're a little over a year old. One's a rooster the other's a hen. And the hen does lay eggs in the warm season. I'd just like to put a little more fat on them to make them cold weather hardy. My chicken feed for all the birds (who are all fat and hardy) is cracked corn, scratch feed, Manna Pro, and laying mesh. I try feeding the cochins bread, oats, and cooked brown rice along with their regular feed and they both eat alot of that but still seem thin to me. Also I raise bantam cochins. They are all fat and hardy little birds. It's just this pair of standards, I thought maybe my other standard chickens wheren't letting them eat so I seperated them but still no luck.