I put these 6 on grass in a chicken tractor at 2 weeks. They have never had pasty butt either. Our first go round had several instances and we kept them inside for 6 weeks and feeding higher protein chick starter. Not having to clean the brooder twice daily is very nice.
We are supplementing and taming these chicks with mealworms. High protein, but a couple tablespoons a day between all of them. They love the mealworm fingers. But after feeding, they run to the corner for a bit until they all come out to ignore me. Work in progress and I'm not out there more than 30 minutes a day. Maybe more. Daughters were working with them, but they've returned.
We are supplementing and taming these chicks with mealworms. High protein, but a couple tablespoons a day between all of them. They love the mealworm fingers. But after feeding, they run to the corner for a bit until they all come out to ignore me. Work in progress and I'm not out there more than 30 minutes a day. Maybe more. Daughters were working with them, but they've returned.