Pileated Woodpecker (Dryocopus pileatus)
Cackle Call: The primary territorial or breeding call. A loud rapid series of wuk calls, rising and then falling in pitch, often with a pronounced lowering at the very end.
Pileated Woodpecker Cackle Call, June 7, 2010. Wyalusing State Park, Grant County, Wisconsin.
Wuk Call: A longer and slower series of wuk calls, often given in flight, and sometimes doubled to create an irregular cadence.
Pileated Woodpecker Wuk Call, September 10, 2010, Vilas County, Wisconsin