Cockatrice

The cockatrice was a small avian magical beast. It was notorious for its petrification ability.

It was closely related to the pyrolisk.

Description
Although about the size of a large turkey or goose and weighing 25 pounds (11.3 kilograms), a cockatrice more closely resembled a chicken, but it was a hideous hybrid with the wings of a bat and a lizard-like tail. A male cockatrice had a rooster's wattles and comb, which the females lacked. It had red glowing eyes.

Combat
Any creature that a cockatrice bit could be permanently turned into stone. Cockatrices were immune to their own petrifying bite and that of other cockatrices, though not of other petrifying creatures and spells.

Cockatrices ferociously attacked any creature that appeared to threaten them or their lairs. Typically, flocks of them would attempt to overwhelm or confuse their opponents, and flew at their faces.

Ecology
Female cockatrices were very rare, much more so than the males.