This morning I came in at 7:00 am and heard our barred owls (Strix varia) calling. We have 4 owls who live together. Their call is really neat; many birders describe it as sounding like “Who cooks for you, who cooks for you alllllllll” . Every once in a while I’ll hear them call during the day, but usually it’s in the early morning when I notice it. If you’d like to hear what they sound like, go to the Cornell Lab of Ornithology website, and type in ‘barred owl’.
Then you can listen for them in your own backyard– I often hear wild ones communicating in the woods behind my house.