The material below is Open Game Content from a 3PP Source
This immense raptor unleashes a shrill cry as it bares its talons, each large enough to carry off a horse.
Roc CR 9 (XP 6,400)
N Gargantuan animal
Init +6; Senses low-light vision; Perception +15
AC 22, touch 8, flat-footed 20 (+2 Dex, +14 natural, –4 size)
hp 120 (16d8+48)
Fort +13, Ref +14, Will +8
Speed 20 ft., fly 80 ft. (average)
Melee 2 talons +18 (2d6+9/19–20 plus grab), bite +17 (2d8+9)
Space 20 ft.; Reach 15 ft.
Str 28, Dex 15, Con 17, Int 2, Wis 12, Cha 11
Base Atk +12; CMB +25 (+29 grapple); CMD 37
Feats Flyby Attack, Improved Critical (talons), Improved Initiative, Iron Will, Lightning Reflexes, Power Attack, Skill Focus (Perception), Weapon Focus (talons)
Skills Fly +7, Perception +15
Environment warm mountains
Organization solitary or mated pair
Rocs are terrifying, legendary birds renowned for their ability to carry off elephants and other big animals. A typical roc is 30 feet long from beak to tail, with an 80-foot wingspan and weight of up to 8,000 pounds. While their beaks are hooked like an eagle's and designed for slashing and tearing, most rocs prefer to seize prey in their massive, clawed talons and drop them from great heights before feasting on the shattered remains. For this reason, they are often followed by flocks of scavengers like rooks, buzzards, and eagles hoping to steal portions of the roc's messy meals. The roc generally ignores such opportunists, but if the scavengers don't take care, they nevertheless may find themselves accidentally consumed by the feeding roc.
Rocs are equally comfortable over land and sea. While they are capable of sleeping in the air as they soar solo across great ranges in search of food, they generally return home to the mountains to roost and procreate. They prefer rocky crags that are completely inaccessible by terrestrial means, building vast nests of tree trunks and ruined masonry. Once a decade, a mated pair lays a clutch of 3–5 eggs and raises its young. Outside of mating, rocs are extremely antisocial, and may attack others of their kind in vicious aerial battles in order to establish their territorial boundaries. When a nest contains eggs or chicks, parents trade off in their long-ranging flights, with one restricting its wanderings to within a 10-mile radius of the nest.
Rocs are most commonly white but can be a number of different colors, from dark brown or gold to black or blood red. Their massive feathers are highly prized, and their eggs even more so. Due to their scarcity and the high risk involved in harvesting them, a single man-sized roc egg can net 4,000 gp if transported to market undamaged. A roc can be trained as well as any other animal, but its great size makes this a daunting task for most would-be trainers of human size. The same isn't true for giants—particularly cloud and storm giants, who often use trained rocs as guardians for their lairs. Rocs are even large enough to serve as mounts for the most prestigious of giants.
Rocs taken as animal companions by druids or rangers are typically newly hatched birds—a baby roc is the size of a person and ready for flight and hunting within minutes of hatching. Unfortunately for druids seeking animal companions of legendary size, an animal companion roc is limited to Large size—still large enough for a Medium druid or ranger to use the flying beast as a mount.
Starting Statistics: Size Medium; AC +5 natural armor; Speed 20 ft., fly 80 ft.; Attack 2 talons (1d4), bite (1d6); Ability Scores Str 12, Dex 19, Con 9, Int 2, Wis 13, Cha 11; Special Qualities low-light vision.
7th-Level Advancement: Size Large; AC +3 natural armor; Attack 2 talons (1d6 plus grab), bite (1d8); Ability Scores Str +8, Dex –2, Con +4.