Trying to figure out how to supplement the laying feed with kitchen scraps. A few months ago, I was given 5 black ausstrolorp hens, about 2 yo. They were raised in an enclosed run. They don't really notice when I throw kitchen scraps on the floor of the coop. If I sprinkle cracked corn, they're all about it and peck and scratch until it's gone. So what's going on? Do I need to restrict their access to the laying feed? I have a 40-lb feeder hanging in one corner all the time. And with it being so cold, the heat lamp is on all the time. It's not very natural but my roo got some frostbite on his comb so I don't dare leave them without heat here in MN.