Complicating this issue is the fact that you are not at this time up to the physical labor of rescue etc. and (I don't think) have room to isolate the mother cat with her kittens (she would take care of the feeding, etc.). It would be best for this group if they could all be in someone's home. I'd want to grab the kittens while they were still grabbable, then trap the mother and keep the whole group in isolation while they were being socialized. Has kitten season slowed down at all so that some foster homes are available? I'd assume calling animal control is to put them at risk of an early death if the shelter is overloaded - but perhaps the organization in your area has more options. Do any PT'ers live near enough to you to help?

I can imagine how much you are enjoying cuddling that tiny baby. We'd all find it next to impossible to put him back.