Well, that's a start. Probably... It looks kind of like a chicken. Those guys end up able to eat everything, just about.

If he's this robust it might be worth just seeing whatever he'll eat. Offer... oh, chopped vegetables, all kinds, same with fruit, and grain... Unsalted nuts, those might be good. Chopped up hardboiled egg, sprouted seeds. Dairy's probably fine. Stay away from things with caffeine, and junk food, and like avacados.

[He considers for another moment.]

And make sure there's water.

...'S cute.