Wow, you’re lucky to have those owls  visit your yard! I consider it a treat when I hear Western Screech, especially  what I think are young ones. There are enough trees, deciduous and evergreen, to provide shelter and nesting places in my Boise Depot Bench location. Though I rarely hear or see them, there are occasionally signs that Great Horned Owls have stopped by for a meal or to discard a pellet.