List of Blue Bird Egg replacements

This is a list of all Blue Bird Egg replacements appearing across all Keen 4 mods.

• 
  Egg

  From Skater Squirrel.
• 
  Navigavimus Egg

  From Operation Ocflore.
• 
  Skull

  From Commander Keen's Valentine Bash.
• 
  Stone Krodacian

  From The Keys of Krodacia.