Gave up on last of their eggs. Had good look in the nest box and she has eaten right thru the bottom of the box. So now I'm thinking the baby could have been desert. ??? I put a plank of wood under the nest box with harder wood she can't get thru. The metal to cold under the eggs. Will give them one more go then give up. No baby body found. If there more mice poo in there now I know I have problem. But got baits out and not seen them any other cages. Can't get this app to take photo. Thank you for responding.