Do geese harbor sperm for a period of time? My goose had a wild Canada mate for a few months this fall and winter. We found him dead a couple of weeks ago. Now my goose has laid 6 eggs. What are the odds that any of these eggs are fertile? I'm willing to let her sit on them so she goes through her hormonal cycle. And I'll be thrilled if she produces even one gosling. But how do I handle her when at the end of 30+ days if the eggs have not hatched? Appreciate any advice.