Is this what you mean? "Is there any use for chickens in TP?" because I'd gladly answer that. The cucco's (as they're called in the ZU) are used to fly to treasure chests and heart pieces, and to play minigames in TP. Considering that TP focused more on reality, I don't think it would fit very much to have a bunch of cucco's freak out on you and try to kill you. A sword-slash at a cucco? It would die, not you.