The Freaky Forester is a random event. Players are sometimes whisked away to a small clearing in a remote forest in Gielinor where they are asked to kill a pheasant with a certain number of tail feathers. The player simply has to give the correct raw pheasant to the forester and then they are able to leave the area via a portal nearby. Players are rewarded with a piece of the Lederhosen set, or 500 coins if they already own the set, after successfully completing this random event. This random event can occur at any given time while logged in.
Lederhosen comes from the traditional German apparel.
You can't kill pheasants after handing in a raw pheasant, no matter if it is the right or wrong type.