I've been reading and searching the forums, but it seems like these terms are used just about interchangeably. Starter = chick food for babies 0-10 weeks old Grower = chick food for babies 0-10 weeks old but with higher protein content? Layer = for laying hens 18 wks and older Crumble = ? Mash = chick food mixed with water so it's like oatmeal? Scratch = certain blend of grains and corn, equivalent to chicken candy Pellets = ? Chicken feed in pellet form? Is this only for adult chickens? So what do you feed them after 10 weeks but before they start laying? The way mine behave, it's not going to matter much, they're really a bunch of pigs, lol! I have 5 BRs and 1 UFO, all 3 weeks old. Now I'm off to read more about grit. Thank you!!