I'm new to keeping chickens and have recently purchased 4 bluebelle hens and a white frizzle cockerel, when we got these we were told by the seller that they were all 12 weeks old and to feed growers pellet for the next 3 weeks then layers pellet! We are now at the 3 week stage and was wondering do we mix the growers and layers together or stop the growers altogether and just feed layers? We were told that we would be able to tell when they are ready to start laying as they're crowns would be more of a red colour! I don't want my hens to get too fat and not lay! This was the reason for getting bluebelles as was led to believe they are good layers any help would be appreciated!