candling quail eggs and incubation?

Nope. Candling quail eggs is a waste of time and effort. Just put them in lockdown 3 days before hatch date. If you still have unhatched eggs 2-3 days after the original hatch date, do a float test. Fill a bowl half full of 99 degree F water and place the eggs into the water. Let the water become still and watch for any wiggling of individual eggs. Wiggling indicates a live embryo and should be put back in the bator. If the egg floats especially high, it's bad. The egg should float with just a millimeter or 2 above water, those should be put back in the bator as well but only if they don't smell. After about 4 days past hatch date and there are no wigglers, I eggtopsy the leftovers. Quail egg hatch rates higher than 50% are considered quite successful.

There's a ton more information on quail in the quail section.
https://www.backyardchickens.com/forum/viewforum.php?id=48
 
You can candle quail eggs as i do it . i hatch lots of quail and dont have any problem . what i do is wait till day 14 when they go in lockdown i use a led flashlight i made a small end out of soft rubber tubing that just fits over the end of the egg. i candle in the turner by touching the tubing to the end of the egg . all im looking for is clear eggs. the clear eggs will show as being almost green glow.. you need a bright light and the more lumen the better. of course the more lumen it puts out the more expensive it is. you can get a nice little led light at wal mart for about 15 bucks . its made by coleman..hope this helps
 
I have 7 cooking with some chicken eggs, temp is at 99 F and humidity is around 40%, you should up the humidity at lockdown to about 60%. I use a mini Maglight to candle the quail eggs, they're at about 8 days now and I can see the embryos moving and well defined veins. The heavily marked eggs are harder.
I wouldn't write off an egg that glows greenish, with cots the inner part of the shell can be blue giving the egg a tint. If it's 8-10 days into incubation and it's green with no visible sign of development then it's a dud.
Check out the quail forum.
 
Be careful with most of tests you read about. I did warm water test once and thought the chick was dead. Egg was immobile until hatch day. Chick popped out and didn't even pip.

Same on candling. So unless we see no activity in egg, i.e., clear after about 7 to 9 days I'd continue to encubate. We encubate up to hatch day and beyond 2 to 3 days.

Wonder how many chicks have lost their lives due to people relying on Google?
 

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