Hi, I’m all new to incubation and raising duckling. I’m a little worried about one of my duck eggs, it’s currently on day 7 of incubation, I started cancelling it at day 5 I know lots of people say don’t candel them all the time but it’s all very exciting and iv been very gentle. So I candled the egg day 5 and could start to see the veins and a little dot growing and could see the dot beating which I’m guessing was it’s heart, then candled again yesterday (day 6) veins were a lot more visible and spread out a lot more. By tonight ( day 7) it seems really weird, veins are still visible but there seems to be a clear bubble floating around the egg that hasn’t been there previously and it’s moving the veins as it passes through I’m worried this isn’t right and the chick might have died. Any help would be greatly appreciated