Sylvester McCoy as Radagast the Brown showing one of the neat details of his costume: the bird’s nest on his head where actual birds hang out underneath his hat.
The costuming in The Hobbit (both movies) is as wonderful as you might expect. So far, my favorite costume is the one created for Sylvester McCoy’s wizard, Radagast the Brown. It’s costume designer, Ann Maskrey’s, favorite as well. Here’s a link to an article where she talks about creating Radagast’s outfit as well as the other costumes for the movie (s).