My son told me there was an egg outside the nest cracked open today. I highly doubt it "rolled out" or that she "accidentally kicked it out" as it is fairly deep (about 9-10") with plenty of hay making it bowl-like inside. She has been a stalwart mama and I have only picked her off the nest every couple of days making sure there were no broken ones. Could she have culled a dud? This is about day 14 I think.