A cage for a tame pet bird which is allowed out daily should be large enough to allow it to easily extend its wings fully without hitting cage sides or toys or objects within the cage.
每天允許使用的溫馴寵物鳥的籠子應該足夠大，以使其能夠容易地完全伸展它的翅膀，而不會撞到籠子側面或玩具或籠子內的物體。