We have a private roof top deck in the city (Chicago). 4 1/2 stories (45ft) up. A female mallard duck has a nest amongst the Snap Dragons / Wild Grass / Plants in a built in planter. Ten Eggs and she started sitting about 2 weeks ago. We have some feed and water out for her (she does use it) and is occasionally gone (eggs are then covered / obscured with down).
How will this play out??? What can we do?