Quail egg completely dark

[ky_bird]

Hey guys! I got the candler you guys suggested and it works really well! 10 out of 12 of my eggs are alive, but one is completely dark, They’re on day 17 all the other eggs have air pockets except for this one, I’ve tried candling from every part of the egg but it’s completely dark everywhere

 

[Nabiki]

There's probably a chick in there. Some shells are very thick and hard to see through. Leave it in there until 24 hours after the last chick hatches. If it hasn't hatched by then, it's unlikely to.