Hello! I have been unofficially all over this site for a few weeks. This is our first foray into having livestock, and if I can handle "gross animal stuff" we'll go beyond chickens, but for now: We are just getting started! My husband and I just got 7 (3 leghorns and 4 Red (they said a mix of Rhode Island and New Hampshire)) pullets from the Tractor Supply on Friday and we are finishing the coop this week!! We are also "inheriting" two unsexed, unknown breed chicks from someone who is friends with my mother-in-law. I have no idea how old these girls are, but i'm guessing the reds are about a week, and the leghorns seem almost twice their size, but really have no idea the ages. One of our reds was pasting when she came home, and I continue to check and wipe her bottom once a day, but I am concerned about her size. She looks like a day old chick, though her wing tips are finally beginning to feather and she seems to be eating and drinking fine. She has always been the smallest, but it seems the others have grown and her size seems to be half that of the reds she came home with. The leghorns, being so much bigger than the reds to begin with, knock her around and really make her look sickly and small. (the one to the right of the right-looking leghorn is the chick in question. shes center in the top pic) I feel like she hasn't grown at all. Does anyone have experience with this? Does anyone have any tips on the pasting? She's doing ok, and has small poops, but i just have no idea what is normal and i have no idea how old she is which makes gauging this so difficult. What about using antibiotics (not for growth, but for coccidiosis)?