https://www.ohgardening.com/can-i-shoot-a-fox-that-is-killing-my-chickens/
Well this article started off okay, but it's clearly written by AI and gets a little silly. If a fox is attacking your flock, the easiest thing is to move the coop 5 miles away????"

But in all seriousness, you can totally shoot an animal that's harmed your flock. Best to have a permit for your weapon, as required and if anyone asks, you say it was threatening your property, plain and simple.
Back when we still were free ranging our flock as well, DH took a fox for me that had taken two of our pullets, and was trying to come back for more. He stayed in the basement, out of view of the neighbors, and used a bow so it was quiet. Never have I been more proud!
We have had times too when there were hawks actively hunting in my yard, we definitely kept the chickens on a shorter leash and it seems like they moved along. Hopefully if you can keep your birds contained for a few days, the threat will blow over.



. I get it though, I do so love to see them range. It's tough. I'd make your calls to alert the local wildlife people, seems sensible, but I would probably have some kind of reinforcements at the ready as well, just in case the situation were to go live. Keep us updated!