Something is trying to get my chickens at night

[McChooky]

So we can’t see what it is on the camera, the camera does go off at 12:27 and you see movement toward the back of the coop, and you hear the creepiest loudest owl, and then our dog walks back there where the coop is at 12:31 and then you see him walking back toward the house at 12:35.
Our yard dog (Duke) has never been around chickens, he’s a lab and he’s also a hunting dog. We’ve always pinned him up when we would let the chickens out but the other day my brother had the chickens out and Duke was also out. The dog is his so he listens to him best but when he let the chickens out Duke left the area and went laid down. I assumed that he knew if the chickens were out he wasn’t supposed to be out so he was trying to be unnoticed so he wouldn’t have to go in his pin. Lol BUT I still don’t trust what he would do if there wasn’t anyone there watching him. We’re from South Louisiana and we live very close to a lake and we have cows behind our property and also across the street so we’ve seen coyotes often…so I now know that our dog, a hawk, coyotes, and snakes are not the only things I have to worry about getting my chickens from reading all you guys predictor post and now I’m going to be so paranoid! I would bring them inside our storage every night until 2 weeks ago (they’re going on 3 months old) because I was scared a snake was going to get them during the night and my daughter was worried of them being scared of the dark. Lol Ik, you can tell we’re first time chicken owners.

Family dollar sells a solar powered light for less than $10. It doesn't give off a lot of light but it would help your camera to record it (won't be pitch black out there)