Similar to the other Bird Zombies that he had already taken down, the big Bird Zombie has decayed ashy skin that is very thin clearly depicting the bones inside. Only its wings have feathers that still allow it to fly, and a brownish beak from the fading yellow color.
But even though it's almost identical to the others, this Bird Zombie is very big.
Pati can't really measure its length but it's massive, its wings are probably the length of a school bus and are now spread majestically blocking the entire sky. It was evident feature can now finally be seen since they were close.
In the middle of its forehead, there's a gleaming brown hue, almost like a ball of brown light.
Whatever it is, it differentiates this big Bird Zombie and the other Bird Zombies aside from the devastating difference in size. Purely guessing from its appearance, Pati can tell that it should be the weak spot.