I am new to raising chicks. I have 12 chicks. One of them is a White Leghorn that is growing much faster and bigger than the others. At first I though that the chick had a skin dz because its skin was peeling off in some areas. After watching it for several days, I realized that its grown so fast that its has stretch marks. Compared to the chicks its same age this Leghorn is tall, wide and chubby just a real porker. It walks across the coop a few feet and then lays down b/c it gets tired from hauling its weight. Itll even lay in front of the feeder to eat. This week it finally learned how to fly up to the first rung of the roost (its brooder mates have mastered flying three rungs up 10 days ago). Even on the first rung it is the clumsiest of the group. Its all it can do to keep from falling off and after many attempts to get comfortable but cant b/c it will tip forward readjust then tip backwards flapping its wings the whole time to keep from falling. Finally, it will just give up and hop back down to the floor. It started showing the beginnings of a waddle/comb a week earlier than the other chicks. Its a weird phenomenon to watch. Im guessing this might be a rooster? It came out of the straight run bin at the store.