Bird, Greater Piranha (CR 1)

Small Animal
Alignment: Always Chaotic Neutral
Initiative: +5 (Dex); Senses: low-light vision, darkvision 60 ft., Listen +3, and Spot+3

AC: 17 (+5 Dex, +2 size), touch 17, flat-footed 12
Hit Dice: 1d8 (5 hp)
Fort +2, Ref +7, Will +0
Speed: Fly 90 feet (Perfect)
Space: 2 ft./0 ft.
Base Attack +0; Grapple -9
Attack: Bite +4 melee
Full Attack: Bite +4 melee
Damage: Bite 1d4-5
Special Attacks/Actions: Rend 1d4
Abilities: Str 1, Dex 21, Con 11, Int 3, Wis 10, Cha 8
Special Qualities:
Feats: Weapon Finesse (Bite)
Skills: Listen +3 and Spot+3
Advancement: 4-5 HD (Medium-size)
Climate/Terrain: Any Non arctic Forest
Organization: Solitary, Pair, Wing (1d4+2), Flock (1-4 wings of 3-6 birds)
Treasure: None

Source: Converted

The Piranha bird certainly lives up to its namesake, in that these birds shred any and all living creatures that they encounter. Two and a half feet in length with multicolored feathers', ranging from red through blue, the piranha bird is easily identifiable. Instead of a beak, two rows of razor sharp teeth fill their gaping maws. These birds lurk in deep in temperate forests, preying upon native wildlife. Unfortunately, they are devastating to their inhabited ecosystem, wiping out much of the smaller mammals.