Incubator update 3

I candled the eggs in the incubator that were 6 or more days old tonight. The earliest egg is 14 days old. All the eggs 12 days old or more are now showing an embryo moving inside the egg, 6 out of the 7 first eggs (one was infertile) are developing successfully so far.
There are 7 more eggs that are 6 to 8 days old. 5 are definitely showing blood vessels, and 2 are uncertain.
The remaining 6 eggs are 5 days old or less, and are not developed enough to show anything with my simple candling method (holding the egg and a CFL light bulb in my hands). I should invest in an LED light bulb just for candling.
The oldest egg should hatch next Monday, the first birth on our farm. If he succeeds, that chicken will be pampered.