Quail absolutely love not lay

[Bigtom Turkey]

I count three males in the middle cage. Are your sure about the sexes? Also hurray for another Hoosier.

 

[CandCChicks]

I count three males in the middle cage. Are your sure about the sexes? Also hurray for another Hoosier.

I count three males in the middle cage. Are your sure about the sexes? Also hurray for another Hoosier.

I should have 2. Which three are you counting?

 

[CandCChicks]

I should have 2. Which three are you counting? What sex would you consider these two

 

[Bigtom Turkey]

Its not letting me edit (my end) But I am fairly sure there is three. I am not an expert in quail sexing, but I did raise them for a little while. You could post pics of them to be sure.

 

[romea]

This is the setup.

If I were kept in such horrible conditions, I, too, would refuse to lay eggs.

 

[Bigtom Turkey]

If I were kept in such horrible conditions, I, too, would refuse to lay eggs.

Thats how quail are raised.

 

[Nabiki]

Thats how quail are raised.

Not always, but often, yes.
I keep mine on the ground.

 

[Bigtom Turkey]

You're the exception. The majority use the Op's setup.

 

[Nabiki]

You're the exception. The majority use the Op's setup.

I know. I don't like that setup, so I raise them my way, but I understand why people raise them like they do. I have the luxury of not needing to raise hundreds of birds in a very small space.

 

[TGinTX]

I have jumbo coturnix quail that absolutely refuse to lay. They are over 4 months old. Have 21% protein, 16 hrs of light, 1/9 male to female ratio, plenty of space, constant clean water source. I’m at a loss what to do. Should I just get new stock? So frustrating.

I had the same issue in past and it was because I had too many roos with the hens. As soon as I removed the roos, I had eggs within 10 days. Personally, I'd pull all roos until they started laying. Similarly, consider if anything else may be stressing them - most commonly predators that approach the quail during day or night. If separated, roos won't be very nice to each other so you'll need to keep an eye on them - although I've never experienced more than a few head/back feathers missing when I caged roos together.
Also look at feed. I'm assuming your feed is layer feed so they are getting enough calcium. If you are on a meat bird 'grower' feed, it needs to be switched to a layer crumble or it won't have calcium in it to form eggs. Switch to a standard brand 'layer' crumble - not any of the 'designer' feeds - no mixed grain feeds (known to have unpredictable results), feed mill blends (less likely to have issues, but might as well rule it out), or 'vegetarian' feeds (known to be cause of laying issues). It can be a game feed, turkey feed, or chicken crumble feed - as long as it is the 'layer' version and a crumble where they can't pick and choose what parts they eat. Pull all treats and scratch until they are laying.
I can't see how you are feeding them in photos, but free feed them - they should have feed available at all times. If you are trying to put out what they 'should' eat to limit waste, consider if they toss half on ground, they are under-nourished.
Again I only suggesting you wait until after they are laying to try to limit waste because that is the issue you are experiencing. I took away supplemental light too early in spring once and mine stopped laying - I immediately knew the cause.
The last items I can think of are temperature and genetics. I've only grown quail in a temp controlled environment so I can't speak to that.
Personally, I wouldn't consider buying new quail for genetics. Your lines can be adjusted by you with selective breeding - to hasten, just get a couple of birds with traits you want. Once I had eggs being laid, the first hens to lay never mattered to me since I had more than I could use. If you want quick laying hens, separate the first to begin laying (although I suspect yours will all start within days of each other) & hatch eggs from offspring of hens that lay earliest. No matter where you source your quail, you have to selectively breed to keep any trait.
I never saw a difference that mattered on how many eggs a hen laid per year - all of mine laid 5 or more eggs weekly. If you want quail that get larger faster, only hatch from eggs from those hens & roos.
I don't eat much quail so size isn't really my selection criteria - I want the largest eggs & really from the smallest birds (for higher conversion rate). My largest birds tend to produce the largest eggs. I haven't been successful getting small birds with large eggs with such a small flock. I'm just getting larger quail & eggs.
Best of luck!