I have 7 hens and 1 rooster, plus 4 babies that were hatched out in July. The grown chickens free range. I keep layer pellets in their feeder at all times, but when I fill the (smallish) feeder, it will have food in it for a week to 10 days, before it is almost empty. That being said, I would never depend on their free-ranging to supply all their needs. Food is available at all times. But, yeah, my bag of feed has lasted several weeks, now...