Yesterday I found a great poster on the Walden's Puddle facebook page:
I was interested in this because I occasionally find owl pellets on the lane when I'm out with my dogs. Of course, it's possible that some of them may have been from hawks.
I know that we have barred owls in the holler. Because I know they are around, I chose barred owls as one of the species I observe for the Nature's Notebook project of the National Phenology Network. Here's a brief recording I got of one on May 7, 2012. The first call is near the beginning of the video, but the second one is toward the end, so hang in there:
One time I saw an owl in my headlights as I returned home after dark. It flew ahead of me for several seconds before continuing on into the darkness of the woods. But most often I either hear them or see pellets. My dogs usually go out to bark at owls if they hear one.
You can compare owl calls at learner.org or at All About Birds on the Cornell Lab of Ornithology website. If you visit the Cornell site soon, you can download owl calls for Halloween uses for free if you sign up to receive emails from them. I just did this and got the 4.1 MB zip file with nine different owl sounds. The offer appeared as a pop-up on the main page and the browse-the-owls page...in fact it looks like it pops up on all the pages unless you tell it to go away.
By the way, Walden's Puddle is an organization in Tennessee that provides care and treatment to sick, injured
and orphaned native Tennessee wildlife. They are the only professionally-staffed wildlife rehabilitation and
education facility in Middle Tennessee. They don't charge for their services nor do they receive federal or state funding for their work. Check out their website for instructions on what to do and how to contact them if you have find a wild creature in Tennessee that may need help. Right now their Facebook page has lots of owl photos scattered about.