Four kittens arrived this afternoon. A man was cleaning out his shed and noticed the four kittens in a box. He left them there, hoping Mumcat would come back but she never did. They are newborns - deaf and blind and just basically bundles of instinct. They still have the remnants of their umbilical cords attached.
Just in answer to a couple of questions I've had. I don't think Mumcat was run over. As she is a feral/stray, she was frightened by the man's presence, enough to not return to her babies. Also, the fluffy thing they are snuggling up to is called a snugglekittie. It's a soft toy in the shape of a cat. It has an electronic 'heart' that the kittens can feel and hear beating. This really comforts them. http://www.snuggleme.com/
What tiny and precious little babies! I'm glad that man knew enough and cared enough to keep an eye on the kittens and find help for them when Mumcat didn't return.