Zombies drops feathers

This is a game mechanic added by the Villager Tweaks Mod, as a reference to an old behavior of Minecraft. Up until beta 1.8, zombies used to drop feathers. This was introduced back in 2010 because at that time, there were no chickens in the game.

As a reference to that time, upon death zombies have a 5% chance to drop a single feather. Villager zombies and baby zombies aren't affected.