No, I'm not referring to processed broilers. This morning while I was watching our girls in their run they all went absolutely stock still--frozen--for over a minute. Not a twitching muscle on a single bird. I'm not exaggerating about the length of time either. I called my wife after about thirty seconds (because this was such an unusual event) and she walked from the kitchen to the living room window and watched with me for at least another twenty or thirty seconds, then we went outside to see if there was a hawk in the trees or a fox nearby. Once we walked to the run the girls relaxed. A couple remained frozen for a few more seconds but they came around. We never saw a predator. I'm assuming their frozen pose was a defense mechanism to fool an aerial predator. Can anyone explain this or offer another reason for it? Thanks.