Visit from the hoot owl

I was awoken in the middle of the night by a very loud owl. It was chatting with another owl that I could hear off in the distance. I think the owl may have been perched either on our house or on the garage. I got up and cracked the window to figure out where it was but I must have spooked it because I saw something fly across the yard toward the woods. It continued to hoot its little heart out but I eventually fell back asleep.

We hear owls pretty regularly in the fall and winter but not so much in the summer. I don't know how large their territory is but they don't seem to be around as much in the warmer months of the year. I think the owls we hear at our house are mostly great horned owls. http://www.owlpages.com/owls.php?genus=Bubo&species=virginianus

I'm pretty sure we have also heard screech owls in the past - their call can be sort of spooky.
http://www.owlpages.com/owls.php?genus=Megascops&species=asio