I have 2 ducks. Female and male. My female is very protective of her eggs she recently just started laying a few weeks ago. I thought I'd leave them and see if she hatches any. She did have one out of the nest the other day but put it with the others, there's 4 eggs and today she had the eggs all lined up in a perfectly straight line, evenly spaced with one still in her"nest" why is she doing this, should I take the eggs away?