What cage is good for the piano parrot?

The piano parrot is better with a metal cage, the space can be larger, and the square or the dome can be used.There are 21 kinds of parrots, the biggest feature is that there are feathers on top of the head.It is usually foraging on the trees, and when drinking water, it will go to the ground. Usually, nuts, seeds, nectar, berry, etc. are eaten. Because they can threaten crops, they are also regarded as harmful birds in some places.