Plume, one of our little creek ducks, has a nest right below our house in some Asian Jasmine. She started hatching July 5, which I had marked as her due date. She hatched two babies that day, two the next, and one the next. We took the babies, and she persists on staying on the nest. It has been a week now since the first one hatched. How long should we allow her to stay on the nest before we remove the other eggs?