Keen Sight & Smell. The zyphon has advantage on Wisdom (Perception) checks that rely on sight and smell, the zyphon has a smell blindsight of 30 feet.

Dive Attack. If the zyphon is flying and dives at least 30 feet straight toward a target and then hits it with a melee weapon weapon attack, the attack deal an extra 3 (1d6) damage to the target.

Multi-attack. The zyphon either makes one with its beak and two with its talons or two tail attacks.

Beak. Melee Weapon Attack: +5 to hit, reach 10 ft., one target. Hit: 12 (2d6 + 4) piercing damage.

Talons. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 4) slashing damage.

Tail. Melee Weapon Attack: +5 to hit, reach 15 ft., one to two targets. Hit: 15 (2d8 + 4) bludgeoning damage, and the target'(s) are grappled (escape DC 14). Until these grapples ends, the target restrained. The zyphon can grapple up to to creatures at a time.