Happy with a dead sparrow

Two weeks ago I heard a noise in the birdhouse and noticed a lot of bird dirt on, in, under it and under a plum tree nearby. A few days later I heard a owl call early in the evening and looked into the direction of the birdhouse and there she was, the little owl from last year.
Noise + shit + little owl = breeding owls in my birdhouse = happy Silvia!
After three evenings observing the birdhouse with the binocolars, I found out that I was happy with a dead sparrow (dutch saying) as there was no life in or near the birdhouse. The third night I made a lot of photos with the interval function but again NO sign of any owl. A few days later I received an email that the little owls are using the same birdhouse (nearby 350 m) as last year.
Again I will not have sweet little owlets in my garden but until now it is not the end of the story.......I assume that she must have very hungry owlets at the moment because she is using my birdhouse for hunting mouses at day. More by accident (I was busy with the laundry) I saw her:

Little Owl - Canon 7DMKII, tripod, remote release, 600 mm, 1/25 sec, F 6.3, ISO100