Amazing! I was just watching the live webcam for not even 2-3 minutes, and Papa Owl enters the nest, mounts Mama Owl, and ... well, you get the idea! And right in front of the litle Owls, too!
Looked just like a couple of cats going at it. It was "wham, bam, thank you ma'am", and about 30 seconds later, it was over and he left to do whatever it is Papa Owls do next!
CaT