My wife had me build a owl box several years ago and hang in one of trees in the backyard. Squirrels were the animals to get use out of the box. Tonight my wife came in all excited she spotted owls in the box. Sure enough it looks like a couple of small screech owls in the box. We also spotted another owl in the neighbors tree (parent?).
The funny thing is we built a chicken coop near this tree this year. So we are out there every day and never gave it a thought to look up at the box. Go figure an owl would finally show up when we stopped looking at the nesting box.
Sorry for the quality of the pictures but photography is not one of my better skills.