I asked about 4 weeks ago about the amount of eggs my mallard had laid. She was at 20! We discarded about 5, then she laid a few more. I decided to leave them alone and see what she did, She was on and off her nest during the day, we were having pretty warm weather and the coop where her nest is was warm, The last 2 weeks or so she is pretty much on constantly. This afternoon we peeked in and she had moved her nest about a foot, but she left 5 eggs behind. I assumed she thought they were bad, is this normal?(first time duck owner! ) I candled the eggs and saw no movement. We have never seen the inside once they had started developing so we cracked them open, one was just a yolk, one was a broken yolk, 2 had started to grow but were still tiny, and the last was plain rotten. I knew it was going to be from the darkness when I candled it,lesson learned!! My son ran so fast!! Anyway, in case my question got lost in there: Is it normal for momma to move her next and discard bad eggs? Thanks!!