The key to keeping all the birds on one feed is to use non layer feeds and toss oyster shell to the layers once a week. Keren mentioned meat bird feed. I use non medicated chick starter/grower as the sole feed when there are chicks as it's crumble and once the young ones are big enough to take pellets the entire flock moves over to a turkey/gamebird finisher. Non medicated chick starter, turkey finisher, meat bird feed and the like are all considered "all flock" feed. Any poultry and any age can eat them.
