Hi IvanB
Sorry to be boring, but hogs are not sociable animals. It might just be that human behaviour changes on Friday and Saturday nights, which might interfere with the hogs normal routes, etc.
However, if Helga happened to be a male, at this time of year, when females may be beginning to appear, male hogs waste a lot of time circling females and biffing any other males they might happen upon – so may be distracted and change their previous ‘routine’. The males will ‘patrol’ their ranges, presumably hoping to find a female and to try to make sure no other male gets there first.
Likewise, a females’ time may be taken up with males seemingly endlessly circling them. For instance in my garden the hogs have to come up the garden to get to the feeding area and if a female was late to the feeding area it has in the past been because a male has intercepted her on her way up the garden – but that could happen anywhere and any night of the week.
So, nice thought, but no hog ‘parties’, or not in the way that most humans seem to perceive them anyway.
