The first cockatrice is rumored to have hatched from a rooster's egg incubated on a dung hill by a toad. Whether or not the rumor is true, the cockatrice's monstrous appearance certainly doesn't contradict its strange and filthy origin story, and these creatures are more than capable of propagating on their own. Cockatrices are remarkably fecund and gather in flocks of up to a dozen members. Each flock contains only a few females. The males-which differ in appearance from the females by having warty wattles and gnarled combs- often fight with each other, with lower-ranking males eventually driven away to find their own lairs or compete among other flocks. Most creatures who run afoul of a solitary cockatrice do so with one of these surly outcasts.