From publisher blurb:
From the darkest alley to the deepest jungle, the duck-folk of Porphyra take on all challenges in their own brave-faced way. Small but feisty, Shibaten break the mold of what Small characters can do, making excellent barbarians and bloodragers.
The shibaten have a place on the patchwork wold of Porphyra, but they are travelers and can easily appear in any game world.
Shibaten of Porphyra contains a full description of this small race with big hearts. Read about their families, why they hide their eggs in monster nests, what they normally do for a living, and why and how they adventure. Includes several new archetypes, the angry quack (barbarian), everyman (medium), fighting quack (brawler), quack-fu monk (monk) and the feather bloodline for bloodragers and sorcerers. There are eleven alternate class features and favored class bonuses for many different classes.