I’m with everyone else here. This could be a natural phenomenon, especially as we move into the colder months of the year. If you feel like the owls being there has more significance, I recommend meditating on it and maybe asking for other signs of significance.
You might even like to check out these other threads about owls, too!
→ Meaning of Owls In/Along Path?
→ Animal totems which is yours?
→ Owls and Athena