We have 8 chicks that are all supposedly the same age (almost 4 weeks). My two golden sex-links are double the size of the others, but I digress. I went to check on them in their coop this morning and my two large sex links are being pecked by the smallest chick, a welsummer. They each have a bloody looking spot on their shoulder from being pecked. They're in a 4x4 coop with roosting bars and plenty of room to get away from the pecker, but I'm not really sure what to do. Do I separate the offender? They haven't really explored their run yet (4x11) so should I encourage them to go out there? I'm not sure what to do to remedy the situation. Is this bird just establishing pecking order, or is this something dangerous that needs to be taken care of?