Feather

Feathers are a common crafting material dropped frequently by Harpies and. They are used in crafting the Featherfall and Gravitation Potions and once again become important in Hardmode for crafting the first tier of Wings – Angel, Demon, and Sparkly Wings.

Other feathers
These are much rarer drops used to craft mid-tier Wings in Hardmode, and have separate IDs than the Feather item.

History
Plume Feather Перо