The Brown bird is brown in color (DUH), and his beak is a huge drill. He is about the size of a white bird. He has bigger wings than the other birds too, and when his power is activated he opens his wings.
When activated, the brown bird opens his wings, and swoops directly down. He drills through most of the material, until hitting the ground. He is very effective in the levels, due to the indestructible metal blocks. He is great against wood and glass, but can only go through one block of stone before stopping.