Hi mypoppet
What triggers hibernation is quite complicated and we probably still have more to learn about it. It isn’t only about temperature. For instance some hogs, mostly the males who don’t have hoglet duties to attend to, will hibernate as early as September (but then return earlier in the Spring). Other hogs more likely hoglets may not hibernate until December and some not at all. Those that don’t hibernate will continue to visit all winter, however cold.
The ones here that haven’t hibernated in the past continued to visit on a daily basis only missing a few days when there was snow. Although they did have boxes/nests nearby that they would have a nap in (or maybe a warm up!) between snacking, before returning to where they came from. They must have had other nests somewhere, outside my garden, where they normally spent the day.
