Mystang, I know a lot of people tip the nest box to prevent losses from kits being pulled out, but I don't like the way the nesting materials get scattered. In addition, some does seem to really resent the kits' early exodus from the box... They are after her all the time instead of only when she decides to feed them.
The easiest and best fix I have found is to put a brick next to the low end of the nest box. It acts as a step for the kits to get back in. You may still have losses of this sort in kits that still have their eyes closed, but once they open their eyes they can generally figure out how to use the step to get back to the nest.
The easiest and best fix I have found is to put a brick next to the low end of the nest box. It acts as a step for the kits to get back in. You may still have losses of this sort in kits that still have their eyes closed, but once they open their eyes they can generally figure out how to use the step to get back to the nest.