I have two eggs that came with a broody hen that I acquired and once she arrived at my place she was no longer broody. She is no longer interested in the eggs and I brought them in and candled them. They are growing and appear to be further along than my other eggs in the bator that were 9 days yesterday. How can i determine @ age? Alot of the shell is dark but not the whole shell and lots of movement and veining noted. Any clues or ideas???