A few weeks ago I found a dirty egg with a hairline crack on the floor of my chickens' coop. I marked it with a Sharpie and put it in the nest box in hopes of attracting my girls back to the box to lay. It worked! I left that marked egg in the box and one day it was mysteriously gone. I thought my son must have accidentally collected it and my DH must have accidentally eaten it. No one got sick so I just shrugged it off and didn't think about it again. Well today I found out that my bantam girls had started hiding their eggs again when I came across SIX of their eggs hidden in the coop. One had a small dent in the shell so I stuck it in the nest box and closed the coop up for the day (nest box is outside of coop) so they would hopefully lay in the box again. I was outside just a bit ago and looked in the nest box and there was my BA's egg but the banty egg was gone. HUH? Did my BA eat the banty egg, shell and all? There is no sign of egg in those clean pine shavings AT ALL? There is no yolk, or shell, or anything even resembling a broken egg in that nest box. Now I'm wondering if she ate the previous egg too.