What is the purpose of collecting feathers?

I am currently playing as Connor. I see feather locations a lot on my map. Some of the feathers I have collected. But what can I do with the feathers?

2 Answers

According to SegmentNext and GameFAQs, collecting all the Feathers will unlock the Kanien’keha:ka outfit in your manor.

As well, you earn bragging rights and progress towards 100% completion of the game.

When u collect all the feathers the native outfit becomes unlocked, at first it seems like this outfit is useless but i noticed connor was much faster and agile while free running while he had this outfit on