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.

Category: FAMOUS AMERICANS 
Clue: In 1920 this man, great-grandson of Sauk leader Black Hawk, became the first president of what is now the NFL
jim thorpe

Category: NORTH AMERICAN BIRDS 
Clue: This bird is known for its size (5 feet tall), its call (carries 2 miles) & its rarity; in 1941 there were only 21 in the wild
the whooping crane

Category: THE BILLBOARD TOP 40 
Clue: Previously done by the Trapp Family, this song about an instrumentalist was a Top 40 hit every December from 1958 to 1962

\"the little drummer boy\"