I think you can only keep eggs viable for around 10 days after that they really have a low hatch rate. I maybe wrong because I don't do this so hopefully more gosling hatchers will chime, I just let Missy lay and take her eggs as she lays them I left 2 of hers[ I marked them] so I could take them out and leave two new fresh ones and 2 fake goose eggs in her nest so she'll keep laying there, but most I took until it was getting close end of April then I left her eggs till she had 8 she went broody and broody means she was sitting on her eggs 24/7 except to come out to eat/bathe and then back in to sit again. Once mine went broody there were no more eggs for the year. I think your suppose to put the eggs pointy end up in an egg carton while saving them but it might be pointy end down so someone who knows what they are talking about needs to tell you. might find info by searching the web.Hmm, need to wait till May then. No signs of interest form either.
What does going broody mean? Will she pluck her feathers and line a nest? Does that also mean no more eggs till the goslings hatch?
Also, the eggs that I collected - do I need to turn them before setting them for her to sit on?