Birdo Eggs appear in Mario Kart: Double Dash!! and Mario Kart Tour and have pink spots instead of the green ones that Yoshi has. A Birdo will spit Birdo Eggs out of its cannon-like snout, and use the eggs like bullets. The player can jump on these to get a free ride. These look just like plain white eggs.
In Mario Kart: Double Dash!!, these eggs were provided as an alternate to Yoshi Eggs. Like Yoshi Eggs, their homing capabilities are amazing and release three random items, which could be a Bob-omb, Star, Mushroom, Green Shell, Red Shell, Thunderbolt, Fake Item Box, or Banana Peel. The bottom of the screen will show if an egg is nearby the player.