I love the archery in The Legend of Zelda: Tears of the Kingdom. Few things give me as much satisfaction as lining up a shot and landing a headshot. This is especially true for long shots, something I discovered after fusing Keese Wings to my arrows. With my love of the bow and arrow, I soon discovered I needed a lot of Keese Wings. So, I began farming this monster part, and now I can tell you about it.
How to farm Keese Wings in Zelda TotK (Tears of the Kingdom)
The best place I found to farm Keese Wings in Tears of the Kingdom was around Hyrule Field, caves, and mountains. These areas can sometimes spawn huge swarms of Keese, especially at night. Firing a bomb arrow at the swarm's center ensures that you kill as many as possible, giving you the best chance at getting a bunch of Keese Wings and Eyeballs.
Your best odds are doing this at night. This is when the swarms are most likely to spawn, and their glowing eyes are easier to spot. If it is daytime, simply drop a Fire Fruit and a bundle of wood to light a fire and rest until nighttime. You are not guaranteed to get Keese Swarms or for them to drop Keese Wings, but this is the easiest way to farm Keese Wings in Tears of the Kingdom.
Related: Where to find Diamonds in TotK (Zelda Tears of the Kingdom)
What to do with Keese Wings in Zelda Tears of the Kingdom (TotK)
Keese Wings can be used to cook elixirs or be fused with items. If you fuse it with an arrow or weapon, it will have a greater distance when it is shot or thrown, respectively. This can make it easier to hit long-distance targets. For this reason, I recommend saving them for fuse combinations and not using Keese Wings in elixirs. Make sure you have plenty of arrows to fuse Keese Wings to as well!
For more information on The Legend of Zelda, check out How to farm Hearty Truffles in Zelda Tears of the Kingdom (TOTK) and Where to farm Zonaite (Map) in Zelda Tears of the Kingdom (TotK) on Pro Game Guides.