My mallard moved her nest last night...

[Paintedhorsegirl]

First off when I got home yesterday from work i noticed one of the eggs in the nest had been crushed and about 2 feet away from the nest. My guess is momma duck knew it was bad so rejected it...Then this morning when i went to check on momma duck I noticed she moved her nest. It was about a foot or so away from the heating lamp in the coop, this morning it was directly under the lamp..Do you think this means she knows they are getting ready to hatch. Ive been expecting them to hatch anywheres from this past weekend til this coming weekend. Im not sure what day is the actual hatch due date, I know day 28 for the first egg layed in her nest was this past friday but day 28 for the last egg that went in her nest is this coming friday. So Im guessing anyday...Im really hoping her moving the nest is a sign that their going to hatch soon