Indeed there are magical uses for feathers. Here's a link to a page that has a great deal of information about the use of feathers of different colors and from different birds http://www.oocities.org/felicitax/Magic.htm
Also, there is a traditional magical item called the Witch's Ladder that uses a string into which feathers are then knotted. You can read more about that at http://en.wikipedia.org/wiki/Witch%27s_ladder
You might also want to check out Chapter Nine in Ted Andrews' book, "Animal Speak" which addresses the use of feathers in magic and spellwork.