Quail Space Calculator

What a typical covey needs

Twelve coturnix quail in a cage need 3.3 sq ft at the recommended allowance, and 2.4 sq ft at the commercial minimum. Per bird that is 28–39 square inches, which is a good deal less than most backyard guides suggest — and the reason this page shows both numbers rather than picking one.

Why this page gives you a range

Most of this site is built on university extension publications. Quail does not have them in the way chickens do: there is no extension bulletin giving coturnix cage space the way Virginia Cooperative Extension gives chicken coop space, and the figure that circulates in backyard guides — one square foot a bird — traces back to other backyard guides rather than to anything measured.

So the numbers here come from the two places that are actually citable, and they disagree with the hobby consensus. The FAO cage recommendation for coturnix is 180–200 cm² per adult bird, about 28–31 square inches, as reported in a 2025 Poultry Sciencereview of quail housing welfare. That is roughly a fifth of a square foot.

That figure is a commercial minimum, not a welfare target, and the same review is blunt about what happens as density rises: body weight gain, egg production, feed conversion and survival all get worse. So the calculator reports the minimum and a more generous allowance as two separate numbers. Averaging them would produce a figure that means neither thing, and quoting only the minimum would present a floor as a goal.

Bobwhite floor space by age

Bobwhite is the better-documented species, oddly, despite being the less popular one for backyard keeping. Mississippi State Extension publishes floor space by age directly:

Above 90°F, Mississippi State recommends increasing every one of those allowances by 25 percent, to reduce cannibalism and heat stress. That is a published adjustment, and the hot-climate toggle applies exactly it.

The two species, side by side

Coturnix (Japanese) quail — Coturnix japonica

The small, fast-maturing quail most backyard keepers mean when they say "quail". Commercial space figures for coturnix are far tighter than backyard guides suggest, which is why this calculator shows both a minimum and a welfare allowance rather than one number.

Bobwhite quail — Colinus virginianus

A larger native quail, raised for flight pens and release as often as for the table. Bobwhite is the better-documented of the two species: Mississippi State Extension publishes floor space by age, which coturnix has no equivalent of.

What this calculator deliberately does not tell you

There is no feed figure on this page, and that is on purpose. Every daily feed rate available for coturnix — 14–18 g, 18–25 g, 20–25 g depending on which page you land on — is either unsourced or drawn from production surveys in other countries with different stock, feed and climate. This site already leaves species figures blank rather than guess at them, and a wrong feed rate here would turn into a wrong feed budget on somebody's spreadsheet.

Cage height is missing for the same reason. Coturnix genuinely do flush straight upward when startled and can hurt themselves on a hard ceiling, so a soft or deliberately low roof is worth designing in — but the specific numbers attached to that advice are keeper practice, not published guidance, and this site does not dress practice up as a source.

Frequently asked questions

How much space does a coturnix quail need?

The FAO cage recommendation is 180–200 cm² per adult bird, which is about 28–31 square inches, or roughly a fifth of a square foot. That is a commercial minimum rather than a welfare target, so this calculator also shows a more generous allowance of 250 cm² (about 39 sq in) — the top of the range that cage-free research has actually studied.

Why is this smaller than the 1 square foot per quail I keep reading?

Because the two figures come from different places. The 1 sq ft rule circulates widely in backyard guides but traces back to other backyard guides rather than to anything measured. The figures here come from the FAO cage recommendation as reported in a 2025 Poultry Science review, and from Mississippi State Extension for bobwhite. More space than the published minimum is a defensible choice — we would rather tell you where each number comes from than average an unsourced rule of thumb with a sourced one.

Do bobwhite quail need more room than coturnix?

Yes, substantially. Bobwhite are larger and more flight-oriented, and Mississippi State Extension gives 0.75 sq ft per bird for 6–12 week birds and 2 sq ft each for breeder and flight-pen birds. Research also reports increased mortality in bobwhite housed below about 232 cm² per bird. Coturnix are the smaller, more sedentary species, which is why they dominate small-space keeping.

Does hot weather change how much space quail need?

Yes, and this is a published adjustment rather than an estimate. Mississippi State Extension recommends increasing every space allowance by 25 percent when temperatures go above 90°F, to reduce cannibalism and heat stress. Toggling the hot-climate option applies exactly that 25 percent.

What happens if quail are overcrowded?

The 2025 Poultry Science review is direct about it: higher stocking density reduces body weight gain, egg production and feed conversion, and raises mortality. Crowding is also the usual trigger for feather pecking and cannibalism in quail, which is why the heat adjustment exists in the first place. The behavioural side is less studied in quail than in chickens, so the published minimums should be read as floors.

How high should a quail cage be?

We do not publish a number for this, because there is not a sourced one. Coturnix do flush straight upward when startled and can injure themselves on a hard ceiling — that much is widely reported and worth designing around, usually with a soft or low ceiling. But the specific "under 12 inches or over 6 feet" rule is keeper practice rather than published guidance, and this site does not present practice as though it were sourced.