Kyoro-chan - This little fella used to be the mascot of a Japanese confectionary product named "Chocoballs". Although this anime opening only dates back to the late nineties, it was on the Chocoballs packaging long before that. Either way, if you listen close you keep hearing a "ku-e, ku-e" in the lyrics, aka "kweh", or to a lesser extent "coooc coooc".
There are also Chocobos in Final Fantasy Tactics with a "Choco Ball" attack.
Anyways, it's been theorised that chocobos are at least named after all this (Chocoball in Japanese is "cho-ko-bo-ru") Odds are they designed the creature and were having trouble giving it a name.