My hens free range from very early morning until dusk. They also have free choice layer pellets available in the coop at all times. I have noticed a huge (like 70%) drop in pellet consumption in the last couple weeks as the weather has gotten warmer & insects/ other goodies more plentiful. My hens never slowed down laying this winter, in contrast to some friends who ration their feed. IMHO, I think they should have food/ as well as oyster/ egg shell readily available: they will eat what they need when they need it. But believe me, they really seem to prefer the stuff they find themselves--when it's available.