My new flock arrived in the mail yesterday (yay!) Three were DOA and a very ill chick died this morning (boo!) It was a postal service problem. A very tough night....tragic and sad, but it happens. The hatchery is sending a replacement shipment, but not for two weeks, which means I'll be a single chick parent until then. The lone survivor appears in great health, and I think she'll be fine. Questions: 1) What should I do differently for a single chick? I know chickens are social animals and I worry that one alone might have problems. The hachery suggested putting a mirror in the nursery, which I did, but she pecks at the image of herself constantly. I worry she'll get hurt! 2) Can I mix a [then] three-week old chick with four day-olds? Hatchery says OK but I'd value other thoughts.