Monster Manual, page 184
Keen Sight. The hippogriff has advantage on Wisdom (Perception) checks that rely on sight.
Multiattack. The hippogriff makes two attacks: one with its beak and one with its claws. Beak. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 (1d10 + 3) piercing damage. Claws. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage.
Grassland, Hill, Mountain