My male mouse has been watching the babies and taking care of the nest. Whenever mom's not around, he fixes up the nest and lays on top of the babies (who nuzzle him and cry like mad because they can't find what they're looking for, haha). I knew other female mice would do this, but I wasn't aware the male would, although when my old gerbils had babies dad helped out, but I didn't think mice did this. It's pretty interesting and definitely cute. :D I'll get some good pictures when their eyes open! :)