Eggs not fertile?

I am thinking that Bindi's journey into motherhood is not going to happen with this clutch. Below is a picture of what a fertile egg is supposed to look like and Bindi's eggs all look clear =(. So I am keeping them for a few more weeks just to make sure and then we will clean out the nestbox and the cage and let her recover and maybe try again in about 6 or 7 months. She is still protecting those eggs though! She's going to be a great mama, when she gets the chance.