Beak

Beak, also known as Peck, is a recurring enemy ability in the series, often inflicting Petrify in earlier games. It is usually used by bird-type enemies, with a few exceptions.

Final Fantasy IV
Known as Peck in the PS and GBA versions, Beak, used by the Helldiver, Cockatrice, Fledgling Rukh, Mist Eagle and Treant, has a chance to petrify one party member.

Final Fantasy V
Beak, used by the Cockatrice and Tot Aevis, has a chance to petrify one party member. It can also be used by Beastmasters by catching a Cockatrice, Tot Aevis, or Sea Ibis.

Final Fantasy VI
Beak, used by the Cirpius, Rukh, Caladrius and Sprinter, has a chance to petrify one party member.

Final Fantasy VII
Beak is a Punch-attribute enemy ability, used by the Nerosuferoth, Cokatolis, Skeeskee, Hippogriff and the boss Shake. It inflicts physical damage to one party member.

Final Fantasy IX
Beak, used by the Axe Beak and Trick Sparrow, merely inflicts weak physical damage to one party member.

Final Fantasy X
Beak, used by the Species Conquest enemy Pteryx, inflicts heavy physical damage to one party member and delays their turn.

Final Fantasy XII: Revenant Wings
Beak, used by the Chocobo, Red Chocobo and the Trickster, inflicts light physical damage to one party member.

Final Fantasy Tactics
Beak is an attack used by the Aevis genus, has a chance to petrify one party member.

Final Fantasy Mystic Quest
Beak is an attack used by Garuda, Roc, and Sparna, inflicts weak physical damage to one party member.

Final Fantasy Legend II
Beak is a special attack that has 30 uses, it also increases a Robot's HP by 9. The damage formula for Beak is the user's Agl x6. This attack can be used by BabyWyrm, Eagle, Garuda, Griffon, Raven, Roc, Su-Zaku, Ten-Gu, Thunder, Wyrm Kid, and OdinCrow.

Final Fantasy Legend III
Beak inflicts physical damage to one party member. It can be used by Raven, Amprex, Griffon, BabyWyrm, Wyrm Kid, Wyrm, Watcher, and Hermit.