Our 14 chicks are now just over three weeks old and thriving. They love the occasional blade of grass. I've been giving them just a small amount (maybe 10 blades(split between the 14 chicks) 1"-2" long each, once a day) and they will grab it and take off before another chick gets a bite. I recall reading not to give them too much green (be it grass, weeds, vegetables, whatever) when they are small to avoid diarhea (spelling?). How old do they need to be before I turn them loose in the run which has lots of grass? They are still in the brooder under the heat lamp right now, but their feathers are coming on fast. I hope to put them in the coop sometime in early April. Thank you.