I can't let my pet parrot fly around outside freely.
I can't let my pet parrot out of its cage to fly around freely.
「私の鳥は自由に空を飛ばせてあげることはできない」= I can't let my pet parrot fly around outside freely. / I can't let my pet parrot out of its cage to fly around freely.
ボキャブラリー
can't = できない
let fly = 飛ばせてあげる
pet parrot = (ペットの)オウム
fly around = 飛び回る
freely = 自由に
outside = (かごの)外
cage = 鳥かご