Is a duck egg that was just laid but is half soft viable?

[Animallover903]

We have two ducks, one male, one female. I watched the female lay an egg and then abandon it outside. I grabbed a towel and nestled the egg in the towel but noticed that half of the egg is soft whereas the other half is hard like a normal egg. Does this mean that the egg is unable to be hatched? Or can it be hatched with specific care instructions?

 

[OrganicFarmWife]

I do not think you can probably hatch that egg. Is she getting enough calcium?