A chocobo is a large, and normally flightless galliforme/ratite bird capable of being ridden. While most chocobos are normally yellow, certain rare breeds are of different colors and have special abilities, such as crossing mountains or flight. Chocobos have occasionally been sighted as lightly armored war mounts. In such cases they can assist their riders with their beak and claws. Overall, the species is a very versatile and useful bird which comes in handy in the mountains where 4 legged tradition mounts are more inconvenient.
Chocobos are more receptive to magical breeding, and have been known to pick up magical abilities from spells being cast on their eggs. One rumoured case of a gray chocobo being bred for a noble in Infernia that had necromantic spells cast on it's egg, which was born with the ability to shift into the ethereal plane.
Stats - Use stats for Clawfoot.
For different colored chocobos add different special abilities, like flight, quicker run speed and water-walking.