Egg dark inside ?

[Crower]

I candled my eggs to see progress . Today is day 7 and I disgarded 2 eggs that were clearly nothing going on. No veins and pretty clear. One of my eggs is very dark inside. Cant make out any kind of movement. I Smelled eggs and couldnt detect any foul order. Should i through it out.? THE other eggs look good you can see them swimming around.

 

[debilorrah]

Quote:
I never throw any out until day 10 at the earliest.

 

[Blulaced Damsel]

What does the darkness mean?? I have 22 in the incubator and at least 1/2 are dark. Its day 15.....
Some are Marans, so they are more difficult to see, but others are blue from CLs