What kind of owl makes the 'who WHO-who who, who' sound?

Most owls are nocturnal, and they use their voices to establish territories and attract mates in the dark. read more

The Barred Owl and the Great Horned Owl are among the most common in the United States. I’d start with those. Keep in mind that each owl can make several different sounds. I think what you’re describing might be a Barred Owl. read more

This tufted, yellow-eyed fellow is the owl world's version of Barry White. Its gravelly hoots carry far, and sound almost like a muffled foghorn from a distance. read more

Long-tufted Screech Owl Megascops sanctaecatarinae. Typical Call - São Francisco de Paula, Brazil. August 2008. CC Nick Athanas. read more