The flock gets sight of a spot of blood on some chicken and they all go to peckin' at it, see, till they rip the chicken to shreds, blood and bones and feathers. But usually a couple of the flock gets spotted in the fracas, then it's their turn. And a few more gets spots and gets pecked to death, and more and more. Oh, a peckin' party can wipe out the whole flock in a matter of a few hours, buddy, I seen it. A mighty awesome sight. The only way to prevent it—with chickens—is to clip blinders on them. So's they can't see.