I am fostering a mother cat who gave birth late Friday night/Saturday morning to three kittens. Everyone seemed fine, mother cat appears to be doing a good job. This morning I found that one of the kittens had died, no idea why. Now I'm very worried about the rest of the litter. What is the normal newborn kitten behavior? They seem to be sleeping mostly, with some moving/stretching, occasional meowing (although less meowing than yesterday... I think, it's kinda hard to tell). Does that seem normal? Are there any signs that I can look for that means the kittens are doing well/not well? When I go into the room mamma cat seems more interested in getting attention from me than sitting with her kittens, so I haven't seen her nurse them. But she's always in the box with the kittens when I check on her so I have to assume she is. When she does climb in with the kittens she often seems to lie on top of them or rolls around on her back - I'm worried she's going to squish them! Am I just being overly worried?