You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
--------
Question: Category: BIRDS 
Clue: The "snowy" type of this member of the heron family is known for its beautiful white plumes

Answer: an egret


Question: Category: BROADWAY 
Clue: Winner of Tony & Oscar for royal role he's been identified with since '51

Answer: yul brynner


Question: Category: THE SENATOR OF MY WORLD 
Clue: In Wisconsin the 2010 Republican wave brought in Ron Johnson, sweeping out this Liberal Democrat

Answer:
russ feingold