Someone sent me this photo, saying it's a young Barn Owl, hatched out where we see it in the picture. I have seen an adult owl here in daytime several times. It's pretty spine-tingling when it flies silently outside, banking to turn. But I have never found evidence that they do more than roost and eject pellets, in one place.
Lots of young owls have a dark facial mask, but this one seems broad for BAOW.
I realize it's a lousy picture, but there is another element that bothers me, the substrate. There is nothing resembling a platform in this roof, just trusses with a channel formed by 2X6 lumber, which this youngster is sitting in. It seems too deep and narrow for the adult to settle into to incubate the eggs.
Is this a little Barn Owl, hatched onsite? If a person was around the nest site in the day, paying attention, would they find activity or hear anything? Or did the pictured owl fly in, then out?