I think its about time to give up on the last egg hatching. From my post entries you can see that this light colored egg was the third layed and if it was going to hatch, should have been fairly soon right after the 4th layed hatching. In the picture below, this light colored egg is out of the 'scrape' where the parents would incubate it. What do you think, Bob? The good news is that the three hatchlings are growing and look great!