My African goose laid 5 eggs which were eventually all taken by a raccoon. She laid one more egg and has been very diligently sitting on it for about 30 days. I believe that it is unfertilized, though I'm not 100% certain. How long should I let her sit on the nest which she rarely leaves? And if I take the egg away and it is bad, should I remove the nesting materials too? Would she lay another batch this late in the year?