A couple of years ago we installed a bat-friendly lid on our shaft, and last September I saw our first bat in there - they'd never been able to get in before as we unblocked it, so we've created a new habitat for them. But if that now means avoiding the site until the Covid pandemic is completely 'over' (as in, never), then they're gonna have to find somewhere else to live, or put up with us digging around them. I'm not going to kiss or hug them, they didn't haul 100 tons of rubble up over four years, and there's plenty of other suitable venues nearby.
If someone had tested positive for Covid would they really be planning a caving trip as their next activity? I would have thought writing a will would be a more appropriate use of their time.