Hello, so 6 days ago my duck egg, which was on day 7 of incubation, started to show the spider veins: (terrible photo, but they were there!) However six days later, on day 13 of incubation, I candled again and am having trouble seeing those same promising veins, in fact I now see three pale (thin shell?) spots, which are visible externally. I can still see the embryo but not really the veins and it all looks quite murky. Would anyone be able to kindly advise on whether this is embryo death? I had hoped to see more veins going up to the air sac but those are not there as far as I can tell. Thank you very much everyone x Also may I ask if there is a way to tell what I did wrong from these pictures? As I feel awful Thank you again in advance.