I wonder if the owls are attracted to lights to help them find food in anyway. With night vision and good hearing, I would think they would avoid those big lights.
I am so glad you were able to get them to agree (with some prompting) to release the injured owl back to your property so that the owls could be reunited! What a wonderful experience to set it free and hear their reaction to being back together. Great story!
I had a barn own living in a tree by my house when I lived in Ashland, OR. I saw the owl pellets near the trunk and when I looked up the whorls of branches, I saw this impressive heart shaped owl face looking down at me. Very cool.