What twelve-letter bird's name is made up of three four-letter words?

HINTS:
#1: The name contains two sets of double letters in consecutive order.
#2: The two consecutive sets of double letters are PPOO.
#3: _ _ _ PPOO_ _ _ _ _

Answer:

WHIPPOORWILL

Credit:
GAMES/World of Puzzles
October, 2016
Stephen Sniderman