I've always wondered how much difference it would make is pullets were fed scratch instead of chick starter. Recently I had the opportunity to find out. We split and order of chicks with some friends this spring, this was their first experience with chickens. We kept all the chicks for a while, feeding them CHS chick starter. Eventually, they were ready for their chicks and took them home. We have the same breeds of birds. Last week, their daughter was over and saw our pullets. She mentioned that ours were much bigger than theirs. I said they may look bigger because we have ours in with some banties. She insisted ours were "way bigger". When her dad came to pick her up, we chatted and I mentioned we were starting to get eggs from ours. He was shocked, and wondered why his weren't laying. Apparently they were using only scratch because a friend suggested this and they are frugal. I suggested he switch to layer feed and explained why. I have never seen or heard of what happens to young birds fed exclusively scratch until now. Will this cause them long term harm? Will they "catch up" with their growth (they are now about 22 weeks)?