A cockatrice is a legendary creature, resembling a large rooster with a lizard-like tail, "an ornament in the drama and poetry of the Elizabethans" Laurence Breiner described it; "the cockatrice, which no one ever saw, was born by accident at the end of the twelfth century and died in the middle of the seventeenth, a victim of the new science".
The cockatrice was first described in the late twelfth century based on a hint in Pliny's Natural History, as a duplicate of the basilisk or regulus, though,...... [wikipedia.com]