After sending earlier post, took my nightly yard stroll. As I went out the door, heard a barred owl calling. Then a few minutes later, the growling/barking calls of the Great Horned Owl protecting its nest. Spotted an owl on tree branch overlooking lake. Size appeared right for Great Horned, but could not make a positive identification in the dark The deep, growling/barking calls continued for a few minutes. It appears there is a nest close by, probably in the grove of trees in the cow pasture next door. There are several squirrel nests and a raptor nest (probably a Red-tail) in the tree grove, and several dead trees in the pasture pond with holes that may be large enough for a Great Horned Owl, although they may not be high enough off the ground. Thoughts? Nicholson atlas states nests in hollow trees 4.6-18.3m off the ground. Sure wish you could have heard the calls, truly amazing - will keep you posted. I'll need to climb the barbed wire fence to search for the nest! Susan Hubley Rogersville, Hawkins County