I'm convinced now of how important it is to weigh the eggs and keep track of moisture loss. My first incubated goose egg externally piped and we lost it as it still had a good sized yoke sac attached. The second one came out last evening (day 30) and it left part of a yoke sac behind in the shell but the gosling is doing well this morning
I am going to weigh all of my eggs from now on and be more meticulous when I incubate. I will post more pics as well.