Most birds can be put outside even if they've been
inhouse most/all their lives, its a matter of putting them
out at the right time, they need to be able to climatize. I
recommend late spring or at the near end of summer when its
not extremely hot. Make sure they have shelter from the
weather and keep them with plenty of water, remember their
water will freeze in the winter time, so it needs to be
checked often. Best of luck to you and your bird.