i have a batch of eggs in the bator and the first chick hatched nearly 24 hours before the next one. No sooner than #2 was out of the shell, #1 went after it, pecking, jumping on it, yanking in its wings, etc. I took #1 out and put it in the brooder where it cried and threw a fit. Fast forward about 12 hours to 5 more chicks and 2 ducklings. When I put them in the brooder, chick #1 immediately went into attack mode and had all the new chicks in a tizzy running away as he went after them. I finally put a small cardboard box in the brooder and put demon chick in that and now all the others are happy in a little group. At a loss as I have never seen a chick act like this?