Ghost Bird is a fanon bird in the Angry Birds world Ghost in the Machine. It is coloured grey.
The Ghost bird looks like the ordinary red bird, but is totally grey in color. He has a ghost tail and creepy sorta eyes. Before he activates his powers, he is sorta translucent.
At start, the ghost bird is tranlucent, and passes through walls. When pressed, the ghost bird becomes tangible again, and can smash through the walls and pigs. The ghost bird is very powerful against wood and stone. If not pressed, the ghost bird will phase through the floor and disappear.