After so many years I was convinced by what I had learned that my place isn't a place they would nest. And I still believe that. However, today I added the species to the oasis list. Probably a migrant passing through, but at least it's more likely they know the nesting tunnels are there... just in case. Today the hill is overgrown and somewhat damaged by animals and nature, but still usable.
When I flushed the unknown owl from the bush it flew a short ways down the arroyo. Certain it was hopeless, I, nevertheless, made my way to the spot where I had last seen it and this is what I spied.
A Burrowing Owl perched on a rock in the middle of the dry stream bed. What a lucky fluke! Even that I went down the arroyo in the first place. And carried my heavy Canon besides. And that the owl and I were there at the same time. And the biggest fluke of all was that the owl paused briefly on that rock before continuing down the arroyo. No photo, no ID. I wasted no time in zooming the telephoto lens and capturing this shot before he disappeared again.