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How to house a quaker parrot
Buy a correctly-sized cage.
Your quaker parrot deserves to have enough space to live in happily. It will need enough space to spread its wings and to have separate spaces to nest, eat, and play.
However, quaker parrots are relatively small birds, so one bird typically needs a cage that is at least 18 inches (45.7 cm) tall , 18 inches wide, and 18 inches (45.7 cm) deep. If you can afford to buy your bird a bigger cage, then you should do that.