Birdo is the most frequently encountered boss in Super Mario Bros. 2, appearing in various forms. Her primary attack involves spitting eggs at you. To defeat her, you must pick up these eggs and throw them back at her. The number of hits required varies: 3 hits for the standard Birdo (World 1-2), 5 hits for the larger Birdo (World 2-3), and 3 hits for the fire-spitting Birdo (World 4-3). If Birdo spits fireballs, you cannot use them as projectiles; you must wait for her to switch back to eggs. Sometimes, a POW Block or extra vegetables are available in the arena to assist. Recommended Character: Toad for his strong throw, or any character if you have good aim. Focus on dodging her projectiles and timing your throws.
While Birdo relies on projectile eggs in Super Mario Bros. 2, her appearance in Mario + Rabbids Sparks of Hope emphasizes tactical positioning and versatile weapon abilities.
While Birdo relies on projectile eggs in Super Mario Bros. 2, her appearance in Mario & Luigi: Dream Team utilizes more complex, turn-based ring attacks.