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Small monstrosity, unaligned
Bite. Melee Weapon Attack: +3 to hit, reach 5 ft., one creature. Hit: 3 (1d4 + 1) piercing damage, and the target must succeed on a DC 11 Constitution saving throw against being magically petrified. On a failed save, the creature begins to turn to stone and is restrained. It must repeat the saving throw at the end of its next turn. On a success, the effect ends. On a failure, the creature is petrified for 24 hours.
The cockatrice looks like a hideous hybrid of lizard, bird, and bat, and it is infamous for its ability to turn flesh to stone. These omnivores have a diet that consists of berries, nuts, flowers, and small animals such as insects, mice, and frogs — things they can swallow whole. They would be no threat to anything else if not for their fierce and frenzied response to even a hint of danger. A cockatrice flies into the face of any threat, squawking and madly beating its wings as its head darts out to peck. The smallest scratch from a cockatrice's beak can spell doom as its victim slowly turns to stone from the injury.