Hi Jack,
The Princess of Wales is a wonderful species! They are one of many species of Australian grass parakeets. They are ground feeders in the wild, foraging on seeds, grains and other foods they encounter, but they also live and feed in trees. As for diet, they will eat the same diet as parakeets or cockatiels. It depends on their own preference with our foods as to whether they prefer the smaller parakeet size or the cockatiel size. But they can also eat food for conures or small parrots, although you may have to break it up some, as you have already done. He is likely capable of eating the Nutri-Berries without the being broken up, but most birds learn to eat them more readily if you begin by breaking them up some. You can gradually include some of the whole berries to challenge him to forage on those. He can also have dark leafy greens, chopped veggies and some fruits.
If you get a second one, is this for a companion or for future breeding? For breeding, they should be closer to 3 years old before you put a male and female together. Otherwise the female might try laying eggs when she is still too young, and this can result in egg binding which is often fatal. Give her a chance to fully develop both physically and emotionally before caging her with a male. While she may look full size by a year, she still has some growth and development ahead of her. If your young bird is a tame pet, I would not get another one to put in the same cage. They will tend to bond and no longer want to be handled when caged with another bird. But two pets in separate cages can interact outside of the cages.
POW’s have a sweet temperament – somewhat similar to a cockatiel. But maybe with a bit of conure mixed in. LOL It’s hard to describe, but they are ground feeders, so you have to be careful about them wanting on the floor, because this puts them at risk of getting injured. No matter how careful you are, accidents happen, so it’s best to have a playstand with a large base they can play in and not let them on your floor.
Thank you for asking Lafeber,
Brenda