I found a weird lump of shell matter stuff in a nesting box. It wasn't egg shaped and had nothing inside...was just like a piece of clay or something, with a rough, sandy texture... I've also gotten some odd eggs in the past... 1) very soft shell - almost transparent and soft, but held togethor. 2) very small egg - size of robins egg - randomly appeared after all girls were laying nicely for a few months...inside was a tiny speck of yolk. 3) an odd shaped egg - had a 'puckered' crater looking depression on one side. There have been other abnormalities and i'm sure there will be more, but for the most part, i get normal eggs on a regular schedule. I was just hoping that someone might know what these strange finds were all about? thanks for your comments.