We are incubating 33 of our Plymouth Barred Rock hens' eggs in a Little Giant incubator we picked up from TSC, and with today being Day 7, we tried candling. You can see two pics below of one of the eggs, which is pretty consistent with all the others: A large dark spot over approx. 2/3 of the egg, with the other 1/3 being see-through. Many of them had veins visible, but we couldn't see an easily identifiable thing resembling a chick inside.
Have we messed up somehow, or this this typical for Day 7? Any thoughts or opinions are much appreciated.
Have we messed up somehow, or this this typical for Day 7? Any thoughts or opinions are much appreciated.

