Feather

The Feather is a crafting material dropped from Harpies. It is used to make items which affect gravity and allow flight.

Other feathers
The Ice Feather drops from Ice Golems that spawns at a rare rate in Snow biomes. Bone Feathers drop in the Dungeon and seems to be an extremely rare drop. Fire Feathers are dropped from Red Devils. The Giant Harpey Feather is a rare drop from harpies.

Used in
( The Bat wings, Bee wings, Butterfly Wings, and Ghost Wings don't actually use any kind of Feather, they use a Broken Bat Wing, Tattered Bee Wing, Butterfly Dust or Ectoplasm. ) ( Fire Feathers are dropped from Red Devils in Hell while in hardmode. )

History
Plume Feather Перо