What happens when goose eggs hatch?

Well, you may find a gosling, or an embryo; if you find a gosling, then it will most likely die soon. When birds hatch, they have a special tooth, but they also need strength. Breaking out of the egg on their own builds up strength. If you open the egg for it, then it will not have the strength it needs (unless you train it, but even that probably wouldn't work), so it will most likely die from not being able to support itself.