Hero feathers in "Fire Emblem Heroes" are a rare and valuable currency. Despite their rarity, they are, nevertheless, useful once heroes begin reaching level 20 in the game.

Hero feathers are the items in "Fire Emblem Heroes" marked by the feather icon in a player's castle screen. They initially appear to be of no use to a player who is still in the beginning levels of the game. However, their true purpose and use become clear once a player reaches level 20. However, by this time, players might observe that they are running low of hero feathers by then.

One way to avoid this is for players to find some friends. The adage, two (or more) heads are better than one comes into application here. It does not matter whether these 'friends' are actual people that the player may know in real life or just some codes one s/he grabbed from Reddit. What matters is as long as these can be added to the player's in-game friends list (by way of the game's code system). Players can periodically 'greet' these so-called 'friends' which will later yield free Hero Feathers regularly.

Another "Fire Emblem Heroes" method involves the foundation of which is built upon the previous method. Upon greeting the 'friends' on one's friend's list, players will often see the leader of his/her friends' parties inside his/her castle which, in turn, can be found at the bottom of the player's screen. Upon seeing this icon, players can click them when they appear. Doing so may yield Hero Feathers for the player.

Players can also use their own heroes in order to earn Hero Feathers. In doing so, a player must check his/her castle in between missions. Here, the player's hero may sometimes appear with heart icons above their heads. This is an indication that the hero has something to give to the player. This cue should prompt the player to click on the said hero in order to receive the item--which may come in the form of Hero Feathers.

Finally, "Fire Emblem Heroes" players can also eliminate his/her weak and/or unwanted heroes. In order to do so, players must select the 'Send Home' function that can be found in his/her Allies screen. This option allows the player to choose which heroes to send away by deleting them. In exchange for such sacrificial eliminations, Hero Feathers usually come as a consolation. The number of feathers depends on the level and the rareness of the said hero.