Big Green Bird is the big version of the green bird.
The Green Bird is slightly bigger than the white bird. His beak is longer, and looks sharper.
The Big Green Bird can change directions twice, even if he already hit something. He can smash through a building, then scream again, and change direction. The player can do it only twice. Unlike the Green Bird, the big green bird does not accelerate when changing directions. The Big Green Bird is great against all materials.