Song: Territorial proclamation by means of "Wok" or "Cuk" call, consisting of a series of 6-8 high-pitched "cuks", the last one lower pitched. Call similar to long call of Northern Flicker, but shorter, ending abruptly. Also "wuk" contact call given by perched bird or in flight and consisting of single or irregular series of "wuk" notes "wuk, wuk-wuk-wuk, wuk-wuk". Drumming is short, resonant, beginning with slight stutter, then full drum.
Sound: Monty Brigham (Nature Sounds of Ontario); 1994 Apr 15; Canada, Ontario; Marlborough Forest; Adult; Primary Sound;