Remind me again, how early can new chicks get treats? I have a Red Star sex-link, a Black Star sex-link, and an Australorp, all 15 weeks old, who moved outside last week. (Seemed a little early, but they were getting huge -- the Australorp especially -- and I live in California, so it isn't that cold out.) They're easily as big as my year-old Ameraucana and Barred Rock girls (the Australorp looks like she's going to kick everyone's butts around the yard). They're in a separate coop and pen for now so everyone can get friendly, and they look on longingly when I give the bigger -- er, I mean older -- girls scratch and treats. Can they partake at this age? Thanks!