Cockatrice

Monstrosity Resilience. The cockatrice is resistant to exhaustion and to the frightened condition.

Serrated Beak. _Melee Weapon Attack:_ +3 to hit, reach 5 ft., one creature. _Hit:_ 6 (2d4+1) slashing damage, and the target must succeed on a DC 11 CON save or be restrained as it begins to turn to stone. The creature must repeat the save at the end of its next turn. On a success, the effect ends. On a failure, the creature is petrified for 24 hours.

Shrieking Crow. When a creature the cockatrice can see within 30 feet of it attacks it, the cockatrice can let out a startling crow. The attacker must succeed on a DC 11 WIS save or have disadvantage on the attack roll.