Song: Song is a single whistled note lasting approximately 1.5 seconds. Whistled tones are repeated about every 10 seconds changing pitch every whistle with some buzzy or metallic notes. Calls include a short dry "chup" harder than that of Hermit Thrush and a high "gipf".
Sound: John Neville (Bird Songs of the Arctic); Canada, Yukon; Eagle Plains; Adult; Primary Sound;