Every once in a while I go back to do Tasks I've never completed. Lotro_wiki isn't a bad place to look for info, although once in a while there's a big mistake in their information.
Today I'm really struggling to find "Fine Feathers." The wiki only lists one enemy that drops them: "Swift Crag-Hawks" of which there are usually a few in the Bruinen Gorges in the Trollshaws. However, there are never very many of this monster, and they only very RARELY drop Fine Feathers. I spent a couple of hours killing them and got 3... out of 10... feathers.
Does anybody know if other enemies drop them? I'm going around the world killing hendrevail of similar levels but so far no luck. Tasks have never been this hard before! Ugh.