Wild Birds Unlimited has posted a live feeder of a Barred Owl nest cam. It is great, 3 chick.
It also has a great microphone. I have heard the owls calling to each other, also lots of Blue Jays, Carolina Wren, Northern Cardinal and Red-bellied Woodpecker calling in the background.
[url]
https://www.youtube.com/watch?v=1cH9SkBVnWE[/url]
Here is a Barred Owl in flight.
Or you can go to http://www.birdzilla.com/birds/barred-owl.html to see more images and hear one of the great bird calls in nature.
Photo © Greg Lavaty.