Sounds fairly typical hog to come out when the cameras aren’t there and vice versa!
There is a another possibility as to why the straws are moved. The hog here who didn’t hibernate last year, made himself a lovely nest but mostly only used it for naps (or possibly warm ups!) when he visited for food. So it doesn’t necessarily mean there is a hog in there the rest of the time. You know hogs – they like to keep us guessing and best not to try to second guess them!
I would just leave your camera out all the time. You never know what you might see, even if the hogs are hibernating.
