Final Fantasy VII - Black Chocobo

Getting Black Chocobos
Black Chocobo Introduction
To breed a black chocobo, you will need to mate a blue chocobo with a green chocobo. Obviously one needs to be male and the other female, but that's the basics.

Reference the Green and Blue pages for information on how to get those.
Before Breeding
Before breeding your chocobos, you should head over to the Chocobo Sage area located near Icicle Inn and buy lots of Sylkis Greens. Feed 99 to your green and blue chocobos. Also buy some Carob Nuts if you don't have any.
The next step is to race your green and blue chocobos at the Gold Saucer up to S class.
At the Chocobo Ranch, select the breed option and use a Carob Nut to mate your green and blue chocobos.
Yellow Green Blue Black Gold Materia Caves