A Magical cage is received from Bill Teach after the completion of the Rocking Out quest. It is used to store an Ex-parrot.
Ex-parrot in a magic cage
An Ex-parrot in a magic cage is basically what it is. It is an ex-parrot stored in a magical cage. The Ex-parrot can be removed if needed.
After the quest, players will be able to raise an ex-ex-parrot, an ex-parrot brought back to life. An ex-ex-parrot is a pet, and requires level 71 Summoning to raise from the dead.
To bring back life into the dead parrot, players must first put the ex-parrot into the magical cage (at which point it pines woefully) and then use the cage on the slab with an image of a black mask engraved in it. The slab is found west of the Cave Horror dungeon entrance on Mos Le'Harmless. This will cause the ex-parrot to un-cease to be, turning it into an ex-ex-parrot.
The slab is due west of the Cave Horror cave entrance.