Red Feather Branchsword is a type of Talisman in Elden Ring. Which has the effect of raising attack power in a fight when your HP is low.
Red Feather Branchsword is located on the island of Scenic Isle. But you have to go there only at night because you have to fight the boss that only spawns at night.
How to Get
When you reach the location you will find the boss near the large rock in open. Boss name is Death bird. Which have a long tail and big head. DeathBird has a long sword and can do long jumps to survive his attacks you can slide and roll forward and right. He just has simple attacks like cane thrust, sweep, and cane thrust pull. This is the easy boss to defeat if you understand his attack pattern. You also have to fight Sheep and Bat during the fight with the boss. After defeating the boss you will be rewarded with Red Feather Branchsword.