From Minecraft Wiki
dec: 288 hex: 120 bin: 100100000
 As a crafting ingredient
Any Firework Star
|February 19, 2010||Added feathers. During the early stages of Indev, they had a slightly different appearance:|
|1.8||Zombies drop rotten flesh instead of feathers. Now, chickens are the only source of feathers. The reason that zombies used to drop feathers is that they were used as a placeholder (before chickens were implemented in the game). It stayed this way because Notch did not know what exactly zombies would drop.|
|1.4.6||12w49a||Feathers can be used to craft a Firework Star with a burst effect.|
- Zombies still drop feathers in Pocket edition.