Robirdo is a huge robotic Birdo that shoots out giant eggs in Super Mario Advance. In its chamber are several chains that whoever you chose can climb to protect you from Robirdo's attacks. He/She defeated it the same way he/she would defeat a normal Birdo; by throwing its eggs back at it. It has a charging attack and a jump that sends a shockwave along the ground.
Trivia
Robirdo replaced Mouser as the boss of world 3-3.