Glass bird

A Pearl Bird appears in the Game Boy Advance game Wario Land 4. It is a green bird with small wings. It is only seen in two Puzzle Rooms throughout the game, one in the 40 Below Fridge, the other in Crescent Moon Village. It doesn't harm Wario in any way, but helps him by spitting out spheres made out of glass or ice.

Wario can catch these spheres and throw them at ! Switches or breakable blocks to reach the prize in a Puzzle Room.