I have seen the Tufted Duck in Puyallup and at
Montlake this winter. Both clearly "tufted" but
even in the best of lights and display the tufts
were fairly minimal. Today there is a picture on
the EBirds rarity of a seriously TUFTED duck.
Enjoy:
http://www.flickr.com/photos/57852199 at N03/6983658071/in/pool-ebird/