We have a good size barred owl population around our home in Central Maine and we have heard them and seen them for years. Last late summer some were screeching outside in the evening and we went out to see two 1/2 grown chicks making all kinds of noise over our compost pile. We could hear an adult at a distance and they were communicating.
I have also seen saw whet and Great horned owls near here. Last summer I heard a Great Horned owl at my son's home in Mid-coast Maine and later that week we found a feather of that owl in the vegetable garden.
On a trip to Patagonia years ago I saw a Rufous Legged Owl.