We looked into the different color chocobos Vana'diel's adventurers have been raising, and came up with the following data.

At the moment, yellow chocobos are annihilating the competition, followed by black chocobos, then blue chocobos, red chocobos, and lastly by green chocobos. When a chocobo first hatches from an egg, most people note how common yellow chocobos are--an observation clearly supported by the data here.

As you are undoubtedly aware, you can acquire a chocobo egg as a reward for a quest or battlefield, as a purchase from Dabih's Wares in Ru'Lude Gardens, or another adventurer could transfer his or her chococard to you. There is no possible way of knowing what color your chocobo will be before it has hatched, but the data from our research indicates each color's likelihood.

And nowadays, with methods of chocobo rearing being expanded upon and the proliferation of chococards for colored chocobos on the increase, chocobo color percentages may be very different in next year's census.