From Team Fortress Wiki
- The Steel Songbird was added to the game.
- [Undocumented] The Steel Songbird was made tradable and craftable.
- Changed item type to "Mascot".
- This item's name and appearance are a reference to the toy of a 60-foot creature named Songbird from BioShock Infinite.
Image featuring every BioShock Infinite hat on the Official Website.
- BioShock Infinite
- Blind Justice
- Person in the Iron Mask
- Pounding Father
- Sydney Straw Boat
- Vox Diabolus