I just nosed around google a bit trying to find a good screech for you, and I discovered that they rarely screech--it is usually to defend its young, in midsummer. Which is exactly when I heard mine. They are all over and their more normal call is a very gentle rumble like a cat purring. I love the ones that Whhoooo....don't know which ones they are. Owls are really cool birds and beautiful. Buy a pair of binoculars and let them stay free.