They can eat any type of seeds when babies and when fully grown. Usefull tip for breeding in other maps besides aberration.
Note: Be sure to have high amounts of seeds at hand, they eat a ton of them. Regular seeds from berries and veggies give a small amount of food, plant species x are the best. DO NOT FEED THEM PLANT SPECIES Y SEEDS! IT DRAINS ALL OF THEIR FOOD AND KILLS THEM.
Put a tracking device on it, if you die while he is on your shoulder it runs away to a safe location where that is no-one knows lol. Btw if you see Wilson tell him it's safe to come home now... WILSON!!!