# Coturnix Quail Care Guide: Housing, Diet and Egg Laying Coturnix quail (Coturnix japonica, also called Japanese quail) are small, fast-maturing game birds that can begin laying eggs at 6 to 8 weeks of age and produce 250 to 300 eggs per hen per year under good management. They need roughly 0.5 to 1 square foot of floor space per bird, a brooder that starts near 37 C (about 99 F) and drops weekly, a layer diet with roughly 20 to 24 percent protein and 2.5 to 3.5 percent calcium, and 14 to 16 hours of light per day to sustain laying. They are not small chickens. Coturnix have limited crop capacity, they handle stress poorly, they can turn to cannibalism when crowded or underlit, and the males crow. This guide covers housing, brooding, nutrition, laying expectations, and the four problems owners report most often: egg drop, soft shells, feather pecking, and prolapse. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## At a Glance: Coturnix Quail Care Table | Life stage | Floor space per bird | Temperature | Feed | Light | Laying | |--|--|--|--|--|--| | 0 to 2 weeks (chicks) | 0.15 to 0.25 sq ft in brooder | 37 C (99 F), reduce about 3 C (5 F) weekly | Starter crumble, 24 to 28% protein | 22 to 24 h, low intensity | None | | 2 to 4 weeks | 0.25 to 0.4 sq ft | 30 to 32 C (86 to 90 F) | Starter or grower, 22 to 24% protein | 12 to 16 h | None | | 4 to 6 weeks (grower) | 0.4 to 0.6 sq ft | 24 to 27 C (75 to 80 F) | Grower, 20 to 22% protein | 12 to 14 h | First eggs may appear at 6 weeks | | 6 to 8 weeks (point of lay) | 0.5 to 1 sq ft | Ambient, 18 to 24 C (65 to 75 F) | Layer, 20 to 24% protein, 2.5 to 3.5% calcium | 14 to 16 h | Laying begins | | 8 weeks to 12 months (peak lay) | 0.5 to 1 sq ft | Ambient, protect from heat above 30 C (86 F) | Layer, 20 to 24% protein, 2.5 to 3.5% calcium | 14 to 16 h | 250 to 300 eggs per hen per year | | Over 12 months (declining lay) | 0.5 to 1 sq ft | Ambient | Layer or maintenance, 18 to 20% protein | 14 to 16 h | Output falls, molt may occur | Use this table as a starting point. Adjust for your climate, cage design, and how your birds actually behave. ## What Makes Coturnix Different From Chickens Owners who move from chickens to Coturnix quail make predictable mistakes because the two birds look similar in a feed-store catalog and behave nothing alike. **No true crop capacity.** Coturnix do not store large volumes of feed the way chickens do. They eat small amounts frequently through the day. This means feeders must be shallow and always available, and it means a bird that stops eating for even a day loses condition fast. **Stress sensitivity.** Laying quail respond to handling, transport, noise, and crowding with measurable stress. In one controlled study, quail housed at higher stocking density showed a tendency toward higher stress indicators, including corticosterone and heterophil-to-lymphocyte ratio, while birds given a calming valerian extract in drinking water had corticosterone fall from 0.62 to 0.38 µg/dL [1]. The practical takeaway is that density and disturbance are not cosmetic issues in this species. They drive production and health. **Cannibalism and feather pecking.** Coturnix are prone to pecking each other, especially when crowded, when light is too bright or too long, when feed or water space is limited, or when a bird is injured and bleeding. Once pecking starts in a flock it spreads quickly. **Males crow.** Male Coturnix crow, and the sound carries. This is a genuine constraint for suburban owners and for anyone with close neighbors. Hens also make contact calls but do not crow. **Short, intense laying life.** A hen can lay from 6 to 8 weeks of age and produce 250 to 300 eggs in a year, but production is front-loaded. Expect the highest output in the first 6 to 9 months and a gradual decline after that, with a molt and a pause at some point. ## Housing Coturnix Quail

### Floor space and cage height Give each adult bird 0.5 to 1 square foot of floor space. Below 0.5 square feet per bird, aggression, feather pecking, and stress rise. In research on space allowance, death on arrival during transport increased as space per bird decreased, and carcass weight peaked at an intermediate density rather than at the highest or lowest [2]. Space is a welfare variable, not just a production variable. Cage height should be 8 to 12 inches for adult Coturnix. They are ground-dwelling birds that flush upward when startled, so a low ceiling reduces the risk of head injury from a vertical jump. If you use stacked cages, leave enough clearance between tiers for airflow and cleaning, and use a solid or lined tray under each tier. ### Flooring and bedding Options that work: - **Wire floor with a drop tray.** Easy to clean, keeps birds off droppings. Use a wire gauge fine enough that feet do not slip through. Watch for foot lesions and provide a resting pad if you see them. - **Solid floor with 2 to 3 inches of bedding.** Pine shavings, hemp, or coarse sand. Bedding must stay dry. Damp bedding plus ammonia is a respiratory problem. - **Sand or grit tray.** A shallow tray of clean sand gives birds a dust-bathing and foraging outlet, which reduces pecking. ### Shelter, ventilation, and temperature Adult Coturnix tolerate cool temperatures better than chickens in one respect (they are dense and small) and worse in another (they have less body mass to buffer cold). Protect from wind, rain, and direct sun. Provide shade in summer. Ventilation must remove ammonia without creating a draft at bird level. Heat is the bigger adult risk. Above roughly 30 C (86 F), laying hens reduce feed intake and production drops. Provide shade, airflow, and cool water. ### Predator protection Coturnix are small enough that a rat, snake, hawk, raccoon, cat, or dog can kill an entire flock in one night. Hardware cloth, not chicken wire, on all sides including the floor if the pen sits on the ground. Locking latches, not hooks. A covered top. If you keep birds outdoors, a double-layer barrier (an outer pen and an inner cage) is the standard approach. ### Light management Laying depends on photoperiod. Provide 14 to 16 hours of light per day for hens in lay. Use a timer so the light period is consistent. Light intensity should be low enough that birds are calm. Bright, continuous light is a classic trigger for feather pecking and cannibalism. If you want to rest a flock, reduce light to 8 to 10 hours per day and production will fall. ## Brooding Coturnix Chicks ### Temperature schedule Start the brooder at approximately 37 C (99 F) at chick level and reduce by about 3 C (5 F) each week until the birds are feathered and can move to ambient temperature. | Age | Brooder temperature | |--|--| | Day 1 to 7 | 37 C (99 F) | | Week 2 | 34 C (93 F) | | Week 3 | 30 to 32 C (86 to 90 F) | | Week 4 | 27 C (80 F) | | Week 5 | 24 C (75 F) | | Week 6 and older | Ambient, if climate allows | Watch the birds, not just the thermometer. Chicks huddled directly under the heat source are cold. Chicks pressed to the far corners are too hot. Chicks spread evenly and active are comfortable. ### Brooder setup - A draft-free box or tub with solid walls for the first week. - A heat lamp or brooder plate with one warm zone and one cool zone so chicks can self-regulate. - Shallow waterers with marbles or pebbles in the trough to prevent drowning. Coturnix chicks drown easily in open water. - Shallow feeders. Chicks eat frequently and need constant access. - Non-slip flooring for the first few days. Smooth plastic causes splayed legs. ### Early nutrition Young quail need a high-protein starter, generally 24 to 28 percent protein. Methionine is a limiting amino acid in quail diets, and maternal and chick methionine status affects growth. In a controlled trial, chicks fed a low-methionine diet had lower body weight at 15 and 35 days and worse feed conversion than chicks fed recommended or high methionine, and hens on low methionine produced lighter offspring [3]. Choose a starter formulated for game birds or quail rather than a chick starter designed for meat chickens. ## Feeding Coturnix Quail ### Protein and energy Layer diets for Coturnix generally run 20 to 24 percent crude protein. This is higher than a typical chicken layer ration. The reason is that quail lay a large egg relative to body size and have a fast metabolism. Amino acid balance matters as much as total protein. Valine is an essential branched-chain amino acid, and in protein-restricted diets, quail fed 0.95 percent valine had the highest egg production and the most efficient feed conversion in one study [4]. Methionine supplementation improves reproductive performance and intestinal function in laying hens [3]. A complete quail-specific layer ration is the simplest way to hit these targets. ### Calcium and shell quality Layer diets for Coturnix should contain roughly 2.5 to 3.5 percent calcium. Shell quality responds to calcium source, particle size, and supporting nutrients. Several additives have improved shell measures in controlled trials: - Algae derivatives (phycocyanin and fucoidan) in drinking water increased eggshell thickness [5]. - Selenium-chitosan supplementation improved shell thickness and strength along with albumen quality [6]. - Gamma-oryzanol at 0.3 to 0.5 g/kg improved eggshell thickness and yolk index [7]. - Red cabbage waste at 0.5 percent improved albumen index, Haugh unit, and eggshell thickness, while higher levels were less favorable [8]. These are adjuncts, not substitutes for a balanced layer ration. Get the base diet right first. ### Feed form and feeding behavior - Use a crumble or small pellet. Coturnix beaks are small. - Keep feeders shallow and wide so multiple birds can eat at once. - Provide constant access. Coturnix do not do well on restricted feeding schedules. - Provide insoluble grit if birds receive anything beyond a complete ration. - Fresh, clean water at all times. Laying hens drink heavily. ### Supplements with evidence in laying quail The research base for Coturnix layer additives is unusually rich. Reasonable options with published support include: - **Probiotics.** E. coli Nissle 1917 supplementation increased egg production across an 8-week laying phase and improved shell strength, albumen height, and Haugh unit [9]. A microbiota inoculum with garlic extract also improved egg quality measures in laying quail [10]. - **Glutamine.** 0.5 percent dietary glutamine significantly improved laying rate after 12 weeks and influenced intestinal morphology [11]. - **Herbal extracts.** A mixture of Withania somnifera, Salvia rhytidea, and Perovskia abrotanoides at 100 mg/kg improved egg production and egg weight [12]. Otostegia persica and Boerhavia elegans leaf powders improved hen-day production, egg mass, Haugh unit, and yolk color, and reduced stress markers [13]. Mountain mint had no effect on production but improved blood lipid profile [14]. - **Oils.** Mealworm oil produced dose-dependent improvements in egg production percentage, egg mass, and feed conversion ratio [15]. Camelina cake at 15 percent reduced egg production rate and egg weight, so it is not a straightforward win [16]. Oxidized n-3 oils reduced feed intake and egg weight, which is a caution about rancid fats in quail feed [17]. Treat supplements as optional refinements. A clean, well-formulated layer ration, fresh water, correct light, and low stress will do more for production than any additive. ## Egg Laying in Coturnix Quail ### When hens start laying Coturnix hens typically begin laying at 6 to 8 weeks of age. Some start slightly earlier, some slightly later. The first eggs are often small and irregular. Within 2 to 3 weeks of onset, eggs should reach normal size and the hen should settle into a daily or near-daily cycle. ### How many eggs to expect A healthy Coturnix hen can produce 250 to 300 eggs per year. In research conditions, hen-day egg production in well-managed flocks commonly runs in the 80 to 95 percent range during peak lay. One study reported 98.69 percent egg production with gamma-oryzanol at 0.2 g/kg versus 86.80 percent in controls [7]. Those are experimental figures, not a promise for a backyard flock, but they show that high output is achievable. Expect a drop in production with: - Shortening daylight - Heat stress - Cold stress - Crowding - Handling and transport - Molt - Disease - Poor diet or stale feed ### Egg size and quality Coturnix eggs are small, roughly 10 to 12 grams. Quality traits that owners can monitor: - **Shell thickness and strength.** Affected by calcium, vitamin D, and additives noted above. - **Albumen height and Haugh unit.** Improve with probiotics, selenium-chitosan, and some plant additives [6][9][8]. - **Yolk color.** Improved by camelina cake, herbal extracts, and some plant powders [16][12][13]. - **Yolk fatty acid profile.** n-3 content rises with chia and flaxseed oil [17]. ### Managing a laying flock - Keep 1 male to 3 to 5 females for fertile eggs. Higher male ratios cause over-mating, feather loss on the hen's back, and injury. - Collect eggs daily. Coturnix eggs are thin-shelled and crack easily underfoot. - Keep nest areas dark and quiet. Hens prefer a covered corner. - Maintain 14 to 16 hours of light. - Do not change the ration abruptly. Transition over 5 to 7 days. ## Troubleshooting Common Problems ### Egg drop A sudden fall in egg production is the most common complaint. Work through causes in this order: 1. **Light.** Has the photoperiod shortened? A power outage, a burned-out bulb, or a seasonal change can cut production within a week. 2. **Temperature.** Heat above 30 C (86 F) or a cold snap will reduce lay. Check for drafts and for heat buildup. 3. **Density and disturbance.** Higher stocking density tends to raise stress indicators in laying quail [1]. Adding birds to an established pen often triggers a drop. 4. **Feed.** Stale, moldy, or improperly formulated feed will cut production. Check the mill date. Camelina cake at 15 percent reduced egg production rate and egg weight in one trial, which illustrates that even well-intentioned diet changes can backfire [16]. 5. **Water.** A blocked drinker can drop production within 24 hours. 6. **Disease or parasites.** Mites, worms, and respiratory disease all reduce lay. Look for pale combs, ruffled feathers, and weight loss. 7. **Molt.** A natural pause. Production returns after the molt. If none of these explain the drop and birds look unwell, contact a veterinarian. ### Soft shells and shell defects Soft or thin shells point to calcium, vitamin D, or shell-gland problems. - Confirm the layer ration contains 2.5 to 3.5 percent calcium. - Check the calcium source. Limestone flour and oyster shell are standard. Particle size matters. - Consider a shell-supporting additive. Selenium-chitosan improved shell thickness and strength [6]. Algae derivatives increased shell thickness [5]. Gamma-oryzanol at 0.3 to 0.5 g/kg improved shell thickness [7]. - Rule out heat stress and rapid lay. Very high-producing hens occasionally lay a shell-less egg. - Rule out infectious bronchitis and other respiratory viruses, which damage the shell gland. A veterinarian can assess this. Persistent soft shells in a flock, especially with respiratory signs or a production drop, warrant veterinary evaluation. ### Feather pecking and cannibalism Feather pecking is a welfare emergency because it escalates. Address it the same day you notice it. Immediate steps: 1. **Dim the lights.** Bright light is a major trigger. Reduce intensity while keeping the photoperiod at 14 to 16 hours. 2. **Increase space.** Move toward 1 square foot per bird or more. 3. **Add enrichment.** Sand trays, hay, hanging greens, and multiple feed and water stations. 4. **Remove injured birds.** A bird with a wound or exposed skin will be pecked relentlessly. Isolate it in a separate pen with a companion if possible, because single housing is stressful for quail. 5. **Check nutrition.** Low protein, low methionine, and low valine diets are associated with poor performance and may contribute to abnormal behavior [3][4]. Confirm the ration meets layer targets. 6. **Check for external parasites.** Mites and lice cause irritation and self-pecking that spreads. If pecking continues after these changes, cull or separate the instigator. In small flocks, one aggressive bird often drives the problem. ### Prolapse Prolapse is the protrusion of the oviduct or cloacal tissue through the vent. It is a medical emergency. Contributing factors in quail include: - Very large or double-yolk eggs - Obesity - Excessive egg size relative to the hen - High production with inadequate calcium - Infection or inflammation of the oviduct - Sudden onset of lay in an immature hen What to do: 1. Isolate the bird in a clean, dim, warm pen. 2. Keep the tissue moist with a water-based lubricant. Do not allow it to dry out. 3. Do not attempt to push tissue back if it is swollen, torn, or dark. That is a job for a veterinarian. 4. Contact a veterinarian promptly. Prolapse can recur, and the underlying cause needs to be identified. 5. Reduce photoperiod temporarily to slow laying if a veterinarian advises it. Prevention focuses on a correct layer ration, controlled body condition, and avoiding over-mating. ## Welfare and Safety Points - **Space is welfare.** The transport study showed that as space per bird fell, death on arrival rose [2]. The same principle applies in the home pen. - **Stress is measurable.** Corticosterone and heterophil-to-lymphocyte ratio rise with density and disturbance [1]. Handling sessions should be brief and calm. - **Light discipline matters.** Consistent 14 to 16 hour photoperiods, low intensity, and a dark resting period reduce pecking and support production. - **Feed quality is not optional.** Oxidized oils reduced feed intake and egg weight in one trial [17]. Store feed cool and dry, and use it within the mill's recommended window. - **Biosecurity.** Quarantine new birds for at least 2 weeks. Keep wild bird contact to a minimum. Clean waterers and feeders daily. - **Egg handling.** Collect eggs daily, discard cracked eggs, and refrigerate clean eggs promptly. Coturnix eggs are small and fragile. ## Common Mistakes New Owners Make - Using chicken layer feed instead of a quail-specific layer ration. Protein and amino acid profiles differ. - Crowding birds to "save space." Density drives pecking, stress, and mortality. - Bright, continuous light. This is a direct trigger for cannibalism. - Deep waterers. Chicks drown. - Skipping calcium or using the wrong calcium source. Soft shells follow. - Keeping a single bird alone. Quail are social and do poorly in isolation. - Mixing ages. Younger birds get bullied and injured. - Ignoring a pecking wound for a day. By the next morning the bird may be dead. - Assuming males are quiet. They crow. ## Limitations and When to Contact a Veterinarian This article is educational and is not a substitute for veterinary diagnosis or treatment. Individual birds vary, and a flock problem usually has more than one contributing factor. Contact a veterinarian promptly if you see: - A prolapse, torn vent tissue, or blood at the vent - A sudden drop in egg production with sick birds, respiratory signs, or diarrhea - Persistent soft or shell-less eggs despite a correct layer ration - Feather pecking that continues after space, light, and enrichment changes - A bird that is not eating, is isolated, or has lost weight - Swollen joints, lameness, or a bird that cannot stand - Any wound that is bleeding or has exposed tissue - Sudden deaths in the flock A veterinarian can examine birds, run diagnostics, and prescribe treatment. Many general practice veterinarians see poultry, and poultry-focused practitioners are available in most states. For flock-level problems, a diagnostic laboratory through your state veterinary system can be useful. ## Frequently Asked Questions ### How much space does one Coturnix quail need? Give each adult bird 0.5 to 1 square foot of floor space. Below 0.5 square feet per bird, aggression, stress, and mortality rise. ### At what age do Coturnix quail start laying eggs? Most Coturnix hens begin laying at 6 to 8 weeks of age. The first eggs are often small, and normal size follows within 2 to 3 weeks. ### How many eggs does a Coturnix quail lay per year? A healthy hen can produce 250 to 300 eggs per year. Peak production occurs in the first several months, then gradually declines. ### What protein and calcium levels do laying Coturnix quail need? Layer rations for Coturnix generally contain 20 to 24 percent protein and 2.5 to 3.5 percent calcium. A quail-specific layer ration is the simplest way to hit these targets. ### What temperature should a Coturnix quail brooder be? Start at approximately 37 C (99 F) at chick level and reduce by about 3 C (5 F) each week. Watch chick behavior to confirm comfort. ### Why did my Coturnix quail suddenly stop laying? Common causes include shorter daylight, heat or cold stress, crowding, stale or incorrect feed, water interruptions, molt, and disease. Check light, temperature, density, feed, and water first. ### Why are my quail laying soft-shelled eggs? Soft shells usually point to calcium, vitamin D, or shell-gland problems. Confirm the layer ration contains 2.5 to 3.5 percent calcium and consider a shell-supporting additive. Persistent soft shells need veterinary evaluation. ### How do I stop feather pecking in my quail flock? Dim the lights, increase space toward 1 square foot per bird, add enrichment, provide multiple feed and water stations, remove injured birds, and check nutrition and parasites. If pecking continues, separate the instigator. ## Related Articles - [Quail Farming: Housing, Breeding, and Egg Production](/knowledge/animal-farming/poultry/quail-farming-housing-breeding-and-egg-production) - [Cockatiel Care: Chronic egg laying and hormonal management guide](/knowledge/veterinary-medicine/exotic-small-animals/cockatiel-care-chronic-egg-laying-and-hormonal-management-guide) - [Cockatiel Egg Laying Problems](/knowledge/veterinary-medicine/pet-bird-care/cockatiel-egg-laying-problems) - [Why Have My Chickens Stopped Laying Eggs?](/knowledge/veterinary-medicine/backyard-poultry/chickens-stopped-laying) - [Mourning Dove Care: Housing, Diet, and Health Essentials](/knowledge/veterinary-medicine/pet-bird-care/mourning-dove-care-housing-diet-and-health-essentials) - [Pet Hedgehog Care: Housing, Diet, and Health Management](/knowledge/veterinary-medicine/small-mammal-care/pet-hedgehog-care-housing-diet-and-health-management) - [Poultry Farm Hens: Housing, Health, and Egg Care](/knowledge/veterinary-medicine/backyard-poultry/poultry-farm-hens-housing-health-and-egg-care) - [When Do Chickens Start Laying Eggs? 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