Incubation is 12-14 days, mine took 13 this year. I would say you should have babies anywhere from Sunday through Tuesday. Congrats! Donna

If the young have already fledged, the eggs left behind are infertile. If she couldn't hatch them, they are not viable eggs. Since you said the young have left the nest, you can throw out the nest and the eggs.

First off, there is no such thing as a dumb question, except the ones that go unasked... I have a microwave egg cooker that produces pretty decent hard 'boiled' eggs... I originally bought it to make soft boiled eggs but, after umpteen years, I'm still working on getting the timing right... lol I'm sure it will work for just the whites... All I do is rinse them out, leave the little droplets of water in it/them, add the egg, pierce the yoke with a toothpick a couple of times, and microwave on full power for 40 seconds for one and 50 seconds for two... It's a little tricky for soft 'boiled' eggs because they don't look cooked when you first take them out of the microwave ( they have to sit for a few seconds ) so you cook them a bit longer and end up with hard boiled eggs... LOL For just the white part I would think it would take about 30 seconds for one... You probably could get away with using any small hard plastic container that has a tight fitting lid with a hole in it... I wouldn't try cooking more that one white at a time though, you might end up with rubber... LOL Rita

12 tablespoons? I have never seen egg whites in a carton, but one egg contains about two tablespoons of egg white. Cook's Thesaurus may have more info. Here is a link that might be useful: Cook's Thesaurus