Well, here's an update.

My vet clinic is closed for the week so I had to pull the kittens out of their care. The good news is that most of them seem to be recovering slowly. There's still one that's not eating or drinking so I'll try to find another clinic that will take her in.

One of the kittens has some weird puncture wounds in his side. The vet tech I spoke to asked if I had a problem with spiders in the house (we do sometimes but not right now) and suggested they were spider bites. When I got him home and had a good look at him, I was floored at the size of these 'bites', the size of a dime on a teeny kitten, two side by side on his shoulder and neck. His ear is also bloody. They didn't send me home with any meds so I hope that just leaving it will allow it to heal. Poor guy, he's been through so much.