I have 1 Comet that lays an XL eggs, sometimes double yolked. The shell is thin and if I don't collect it soon after laying it gets crushed by the other chickens laying their eggs in the same nest boxyes, they have plenty of boxes, they just mostly like to sit in the same place although they do occasionally pick another. None of my other chickens lay eggs as large or as thin shelled as these and they all get oyster shell as well as some egg shell. Her eggs have no lumps or wrinkles but they feel likNe sandpaper! Anyone know why? I am changing out some of my flock this fall and think as much as I hate to, that this should be one that goes.