Northern Saw-whet Owl - Aegolius acadicus

Song: The male gives a monotonous series of short, staccato whistles on the same pitch and delivered at a rate of 2 per second, audible over distances of up to 1km. Taped playbacks often elicit a softer, lower-pitched and more rapid version (4-5 per second). Occasionally females may perform a softer version in duet with male.

Sound: Monty Brigham (Nature Sounds of Ontario); 1989 May 12; Canada, Ontario; Otter Lake; Adult; Primary Sound;