Why Are My Chickens
Not Laying Eggs?
10 science-backed reasons your hens stopped producing — and exactly what to do about each one. Backed by veterinary research and real-world flock management experience.
According to the American Poultry Association, a healthy laying hen in peak condition produces approximately 250–300 eggs per year — roughly 5–6 eggs per week.
This guide covers every major reason chickens stop laying, from natural biological cycles to nutritional deficiencies, environmental stress, and serious health conditions. We'll also show you exactly how to diagnose which issue your flock is facing, compare egg-laying breeds, and tell you when it's time to call a veterinarian.
At-a-Glance: 10 Reasons Chickens Stop Laying
Use this table as a quick diagnostic tool. Identify the symptom pattern you're seeing, then read the detailed section below for the fix.
| # | Reason | Telltale Signs | Urgency | Fix Timeline |
|---|---|---|---|---|
| 1 | Age & Life Stage | Gradual year-on-year decline | Low | Permanent |
| 2 | Annual Molt | Heavy feather loss, dull coat | Low | 8–16 weeks |
| 3 | Insufficient Light | Seasonal, winter onset | Medium | 1–2 weeks after fix |
| 4 | Poor Nutrition | Thin shells, soft eggs, lethargy | Medium | 2–4 weeks after fix |
| 5 | Stress | Sudden stop, nervous behavior | Medium | Days–weeks after removal |
| 6 | Disease & Infection | Respiratory signs, multiple birds | High | Vet-guided |
| 7 | External Parasites | Visible mites, pale comb, feather damage | High | 1–4 weeks with treatment |
| 8 | Broodiness | Stays in box 24/7, fluffed feathers | Low | Days–weeks to break cycle |
| 9 | Dehydration | Sudden stop, lethargy, dry feces | High | 1–2 weeks after rehydration |
| 10 | Hidden Nesting | Hens ARE laying — elsewhere | Low | Immediate: search the yard |
Sources: Penn State Extension; University of Florida IFAS Extension; Merck Veterinary Manual, 2024; Mississippi State University Poultry Extension.
1. Age — The Inevitable Decline
Every hen has a finite number of eggs she will ever produce. She is hatched with all the egg follicles she will ever develop — roughly 2,000 at birth — but only a fraction mature into laid eggs over her lifetime.
Most hens begin laying between 18 and 24 weeks of age, depending on breed. Production peaks between months 3 and 24 of life, then declines by approximately 15–25% per year after the second laying season. By year 4 or 5, many hens have dramatically reduced output; by year 7–10, they may stop entirely. (Penn State Extension, 2023)
To maintain consistent production on a small farm, stagger your flock's ages. Introduce 6–8 new pullets every 2 years so there's always a high-producing age group in the mix.
2. Annual Molting — The Feather Factory Shutdown
Once a year — typically triggered by decreasing day length in late summer or autumn — hens undergo a molt. This is a natural, hormone-driven process of replacing old feathers with new ones.
During molt, the hen's body redirects nearly all available protein and energy toward feather synthesis. Since egg production is also protein-intensive (a single egg contains roughly 6g of protein), the two processes simply cannot run simultaneously. As a result, most hens stop laying entirely for 8–16 weeks during molt. (Mississippi State University Extension, 2022)
You can support your hens through molt by temporarily increasing their dietary protein to 20–22% (switch to an all-flock grower feed or supplement with black oil sunflower seeds and mealworms). This accelerates feather regrowth and shortens the non-laying period.
A hen mid-molt — notice patchy, uneven feathers on the neck and back. This is completely normal and temporary.
3. Broodiness — The Maternal Override
A broody hen is in a distinct hormonal state where her body believes she is incubating eggs. Prolactin — the same hormone that drives maternal behavior in mammals — surges, suppressing the reproductive hormones that trigger ovulation and laying.
Signs of broodiness: The hen refuses to leave the nest box, sits flat and puffed on eggs (even unfertilized ones), vocalizes loudly when disturbed, may pluck her own breast feathers to expose warm skin, and appears aggressive. She may stop eating and drinking adequately.
Some breeds are genetically predisposed to broodiness (Silkies, Buff Orpingtons, Australorps), while commercial layer breeds (Leghorns, ISA Browns) rarely go broody. To "break" a broody hen, place her in a well-ventilated wire-bottomed cage for 3–7 days — the airflow reduces core body temperature and resets hormone levels. (Poultry Science Association Review, 2021)
The Science of Light & Egg Production
Light is arguably the single most controllable factor in egg production, and understanding it is fundamental for any chicken keeper.
A simple 40W incandescent bulb on a timer can extend day length to 14–16 hours, maintaining winter egg production.
4. 💡 Insufficient Light — The Hormone Trigger
Hens have light-sensitive cells not only in their eyes but also in their brain and the pineal gland. When these cells detect sufficient light, they trigger the hypothalamus to release gonadotropin-releasing hormone (GnRH), which sets off a cascade of reproductive hormones culminating in ovulation. (University of Florida IFAS Extension, 2024)
The minimum light duration required to maintain laying is 14–16 hours per day. In winter, natural daylight in most of the United States drops to 8–10 hours — well below this threshold. Without intervention, most flocks reduce or stop production from October through February.
Solution: Install a simple 40–60W incandescent equivalent (or a warm-white LED) in the coop on a timer. Add light in the morning (not evening, as sudden darkness simulates a stress response). Increase by no more than 1 hour per week to avoid shocking the flock.
5. ❄️ Seasonal Changes & Temperature Stress
Beyond light, extreme temperatures independently suppress egg production. The optimal laying temperature range is approximately 55–75°F (13–24°C). Below 32°F (0°C), hens divert energy to thermoregulation instead of reproduction. Above 90°F (32°C), heat stress elevates corticosterone levels, directly suppressing the reproductive axis. (USDA Agricultural Research Service, 2023)
During heat waves above 95°F (35°C), egg production can drop 25–35% within days. Ensure shade, increase water access, and add frozen treats (watermelon, cucumber) to help your flock stay cool.
6. 🌾 Nutrition — Fueling the Egg Factory
A chicken egg is a biochemical marvel — and building one requires precise nutritional inputs every single day.
Laying hens have some of the highest nutritional demands of any domesticated animal relative to body size. A hen producing one egg per day needs:
Source: National Research Council — Nutrient Requirements of Poultry, 9th Edition.
Feeding your chickens table scraps, scratch grains, or generic poultry feed instead of a purpose-formulated layer pellet or crumble is one of the most common causes of declining egg production. Scratch grain is essentially chicken junk food — high in carbohydrates, low in protein and calcium. The USDA recommends that treats and scratch should not exceed 10% of total daily intake.
Signs of nutritional deficiency include: thin, brittle, or soft-shelled eggs; shell-less eggs ("rubber eggs"); lethargy; pale yolks; and reduced clutch size before complete cessation. (National Research Council, Nutrient Requirements of Poultry, 9th ed.)
Provide free-choice crushed oyster shell in a separate feeder year-round. Hens are remarkably good at self-regulating calcium intake and will consume more when in lay and less when not. Never mix it into the main feed, as it throws off the phosphorus-calcium ratio for roosters and non-layers.
A balanced nutrition setup: quality layer pellets, free-choice oyster shell, and unlimited fresh water are the three pillars of consistent egg production.
Stress, Health & Hidden Issues
The remaining four causes range from easily overlooked management issues to serious medical conditions requiring professional attention.
Stress & Environmental Disruption
Elevated cortisol directly suppresses GnRH and reproductive hormones. Stressors include: predator presence (even smelling a raccoon at night), flock bullying, overcrowding (<4 sq ft/bird indoors), moving the coop, introducing new flock members, and sudden routine changes. Even a single night of significant stress can halt production for 2–4 weeks. (USDA NIFA, 2023)
Disease & Viral Infection
Several pathogens directly target or damage the reproductive tract. Infectious Bronchitis Virus (IBV) is one of the most common causes of sudden, flock-wide laying cessation and can cause permanent reproductive tract damage if contracted early in life. Egg Drop Syndrome, Newcastle Disease, Marek's Disease, and Avian Influenza all reduce or halt production. Affected birds often show respiratory symptoms, watery/discolored droppings, or neurological signs. Seek veterinary diagnosis immediately. (Merck Veterinary Manual, 2024)
External Parasites (Mites & Lice)
Red poultry mites (Dermanyssus gallinae) are nocturnal feeders — they hide in coop cracks during the day and feed on blood at night. Heavy infestations cause severe anemia, stress, and laying cessation. Other culprits include Northern Fowl Mites and feather lice. Check under wing feathers and around the vent area for movement or "pepper-like" eggs. Treat with appropriate poultry-safe insecticide and thoroughly clean the coop. (University of California Agriculture & Natural Resources, 2023)
Dehydration & Water Restriction
An egg is approximately 74% water by weight. A hen that goes just 24 hours without adequate fresh water may cease laying for up to 2 weeks. In winter, frozen waterers are a very common overlooked culprit. Ensure waterers are checked twice daily and use heated base waterers in freezing climates. Chickens also drink significantly more in summer heat — a 5-bird flock in hot weather may require 1.5–2 liters per day. (USDA Agricultural Research Service)
Before assuming a health problem, spend a morning watching your hens. If they're active and healthy-looking but simply not laying in the box, follow them. Hens will reliably return to a secret laying spot. Check under porches, behind hedges, inside wheel barrows, and under dense shrubs. Confine the flock until after 10 AM when most laying is complete to encourage nesting box use.
Egg-Laying Breed Comparison: Choose the Right Hen
Not all chickens are created equal when it comes to egg production. Understanding your breeds' genetic potential helps set realistic expectations — and helps you diagnose whether a production drop is a problem or just breed-normal behavior.
Rhode Island Reds (left) are excellent beginner breeds; White Leghorns (right) are the world's most efficient commercial egg layers.
Commercial hybrid breeds like the ISA Brown are engineered specifically for maximum egg output — up to 350 eggs per year — but this intensive production means they often "burn out" faster and have shorter laying careers than heritage breeds.
Heritage breeds like Plymouth Rocks and Sussex lay fewer eggs annually but often maintain modest production until age 5–6, making them well-suited to family flocks where consistent production over years matters more than peak output.
Ornamental breeds like Silkies are notorious for going broody, which drastically cuts annual egg totals — expect 80–120 eggs per year at best from these feathery beauties.
| Breed | Annual Eggs | Laying Starts | Cold Hardy | Broodiness | Best For |
|---|---|---|---|---|---|
| ISA Brown (Hybrid) | 300–350 | 16–18 weeks | Moderate | Rarely | Maximum production |
| White Leghorn | 280–320 | 16–18 weeks | Poor | Rarely | Warm climates |
| Rhode Island Red | 250–300 | 18–22 weeks | Good | Occasional | Beginners, dual-purpose |
| Plymouth Rock | 200–280 | 20–24 weeks | Excellent | Occasional | Cold climates |
| Australorp | 250–300 | 22–26 weeks | Good | Sometimes | Consistent layers |
| Sussex | 220–270 | 20–24 weeks | Excellent | Sometimes | Family flocks |
| Easter Egger | 200–280 | 20–24 weeks | Good | Moderate | Coloured eggs, pets |
| Silkie | 80–120 | 24–36 weeks | Moderate | Frequently | Ornamental / hatching |
Sources: The Livestock Conservancy; American Poultry Association; University of Kentucky Cooperative Extension Service.
Diagnosis & Solutions: What to Do Right Now
Once you've identified the likely cause, use this table to act quickly. Work through the "immediate fix" first, then implement the long-term strategy.
| Cause | Immediate Fix | Long-Term Strategy |
|---|---|---|
| Age | Accept reduced production; don't stress the flock | Introduce new pullets every 2 years to maintain flock average |
| Molting | Raise dietary protein to 20% with mealworms or BOSS | Plan for 8–16 weeks of reduced/no production annually |
| Low Light | Add 40W warm-white LED bulb on a 14h timer (morning start) | Install permanent timer system every autumn; increase 1h/week |
| Poor Nutrition | Switch immediately to quality 16–18% layer pellets | Provide free-choice oyster shell; limit scratch to <10% of diet |
| Stress | Identify and eliminate the stressor (predator sign, new bird, etc.) | Ensure ≥4 sq ft/bird indoor space; secure perimeter; stable routine |
| Disease | Isolate affected birds; contact a poultry vet immediately | Implement vaccination protocol; maintain strict biosecurity |
| Parasites | Treat with poultry-safe permethrin spray; clean coop thoroughly | Provide dust bath with diatomaceous earth; deep-clean coop monthly |
| Broodiness | Move hen to wire-bottomed cage for 3–7 days | Collect eggs frequently; choose breeds with low broody tendency |
| Dehydration | Provide immediate unlimited fresh water access | Install heated waterers for winter; check twice daily in summer heat |
| Hidden Nest | Monitor hens in the morning; follow them to the laying spot | Confine flock until 10 AM daily; ensure nesting boxes are clean & private |
"Multiple issues rarely cause problems in isolation — they compound. That's why a systematic checklist approach always outperforms guesswork."
From 6 Eggs a Day to Zero — Ohio Backyard Flock, Autumn 2023
Sarah T., a backyard farmer managing an 8-hen mixed flock in rural Ohio, reported that her typically reliable flock dropped from 6 eggs per day to zero over the course of two weeks in mid-October. This is her account, reconstructed from notes shared on a poultry keeping forum.
- Week 1: Production drops from 6 to 2–3 eggs. No obvious signs of illness. Hens eating normally. Sarah assumes molt beginning.
- Week 2: Complete cessation. Heavy feather loss on 3 birds confirms molt. But 5 hens show no molting signs yet still not laying — concerning.
- Diagnosis check: Sarah follows our checklist. Feed is appropriate layer pellets — ✓. Water checked — ✓. But she notices scratch marks and droppings around the coop perimeter at night. Trail camera reveals a raccoon investigating the coop nightly for 10 days.
- Root causes confirmed: Three hens in mid-molt (expected) + five hens stressed by nightly raccoon presence + coop had no supplemental lighting as days shortened to ~10 hours.
- Actions taken: Hardware cloth reinforced around base; motion-activated light installed; 60W equivalent LED added inside on a 14.5-hour morning timer; protein temporarily boosted to 20% for molting birds.
This case illustrates one of the most important lessons in flock management: rarely is there a single cause. A systematic checklist approach — checking light, nutrition, stress, health, and biology in sequence — dramatically shortens the diagnostic process.
When to Call a Poultry Veterinarian
Most cases of reduced laying are manageable at home. However, the following situations require professional veterinary evaluation and should not be delayed. Early intervention can be the difference between a recoverable illness and a flock-wide catastrophe.
- Egg binding — A hen straining, tail pumping, or walking with a penguin gait without producing an egg is a life-threatening emergency requiring immediate veterinary care.
- Multiple birds affected simultaneously — Sudden, flock-wide laying cessation with no clear environmental cause points to infectious disease.
- Respiratory symptoms alongside laying cessation — Coughing, gurgling, nasal discharge, or gasping combined with no eggs suggests Infectious Bronchitis, Newcastle Disease, or Avian Influenza.
- Bloody, abnormal, or watery droppings — Especially combined with lethargy and reduced laying; possible coccidiosis, worm burden, or internal laying.
- Unexplained weight loss — A bird that feels light and bony but is eating normally may have internal parasites, tumors (Marek's Disease), or chronic infection.
- Visible swelling of the abdomen — "Water belly" (ascites) or a swollen, doughy abdomen in a non-laying hen suggests internal laying or peritonitis — both require veterinary assessment.
If a hen has been straining to lay for more than 30–60 minutes, showing lethargy, or sitting hunched with tail down, she may be egg-bound. This can be fatal within 24–48 hours. Provide warmth (85–90°F) and contact a veterinarian immediately. Do not attempt to manually remove the egg without professional guidance.
Expert Poultry Health Resources at Your Fingertips
Explore VetraPulse →Frequently Asked Questions
Everything backyard keepers and small-farm owners ask most — answered clearly and concisely.
How long does it take for chickens to start laying again after molting?
Most hens resume laying 8–16 weeks after molting begins. The timeline varies by breed, individual health, and the nutritional support provided during molt. Hens fed a high-protein diet (20%+) during molt typically return to production faster — sometimes within 8–10 weeks — compared to hens kept on standard layer feed, who may take 14–18 weeks.
Once feathers are fully regrown and body condition is restored, production typically returns to near-pre-molt levels for young hens (year 1–2) but will be somewhat lower for older birds entering their second or third molt.
Do chickens need a rooster to lay eggs?
No — hens lay eggs completely independently of whether a rooster is present. The eggs laid without a rooster are simply unfertilized and cannot develop into chicks, but are otherwise identical in nutrition and flavor to fertilized eggs.
A rooster is only required if your goal is to hatch chicks. In fact, introducing a new rooster to an established flock can temporarily reduce laying due to the stress of social hierarchy disruption.
Why are my chickens not laying eggs in summer?
Summer laying cessation is usually caused by heat stress. When ambient temperatures exceed 90°F (32°C), hens experience physiological stress that elevates corticosterone levels, directly suppressing reproductive hormones. Studies by the USDA ARS found that sustained heat above 95°F can reduce egg production by 25–35% within days.
Solutions include: providing ample shade and cool water, increasing ventilation in the coop, freezing treats (watermelon, ice water), and scheduling additional feeding in the cooler morning and evening hours when hens are more likely to eat. Longer days in summer typically provide adequate light, so photoperiod is rarely the issue in warm months.
What should I feed my chickens to produce more eggs?
The foundation should always be a complete layer pellet or crumble formulated with 16–18% crude protein and approximately 3.5–4% calcium. Supplement this with free-choice crushed oyster shell for additional calcium. Make sure fresh, clean water is always available — a hen may drink 270–400ml per day depending on size and ambient temperature.
Beneficial additions (within the 10% treat allowance): black oil sunflower seeds for healthy fats and protein, mealworms for extra protein especially during molt, and fermented feed which research suggests can improve feed conversion and may support laying efficiency. Avoid excessive scratch grains, bread, or kitchen scraps, which dilute dietary protein and calcium.
How many hours of light do chickens need to lay eggs?
The minimum threshold to maintain laying is approximately 14 hours of light per day, with 15–16 hours being optimal for most breeds. This can be a combination of natural daylight and supplemental artificial light.
If supplementing, use a warm-white LED or incandescent equivalent of 40–60W per 100 square feet of coop space, placed at hen eye-level or slightly above. Run it on a timer and add light at the beginning of the day (early morning) rather than the end, as sudden darkness can disorient roosting birds. Gradually increase light exposure by no more than 1 hour per week to avoid shocking the flock's reproductive system.
Why is my hen sitting in the nest box all day without laying?
This is classic broody behavior. A broody hen is in a hormonally-driven state where she believes she is incubating eggs. Elevated prolactin suppresses the reproductive hormones responsible for ovulation and laying.
To break broodiness: remove her from the nest box repeatedly throughout the day, block off the nest box temporarily, or — most effectively — place her in a well-ventilated wire-bottomed cage elevated off the ground for 3–7 days. The airflow reduces her core body temperature, which is the key hormonal trigger for broodiness. Most hens return to laying within 1–3 weeks after successfully breaking the broody cycle.
At what age do chickens stop laying eggs completely?
There is no hard-and-fast age, but most production breeds significantly decline after year 3 and many stop consistent laying by year 5–6. Heritage breeds and dual-purpose breeds sometimes maintain modest production until year 7–8. Commercial hybrid layers like ISA Browns often show the steepest decline — peak production in year 1, noticeable decline by year 2–3, sporadic laying by year 4.
It's worth noting that hens do not go through menopause in the same way humans do. Rather, they gradually exhaust their finite supply of egg follicles. Keeping hens well-nourished, low-stress, and in good health can maximize the productive years of their laying career.
Can stress permanently stop a chicken from laying eggs?
Rarely permanent, but chronic, unaddressed stress can cause prolonged cessation and, in some cases, reproductive tract damage. Acute stress (a one-time predator scare, for example) typically causes 2–4 weeks of reduced laying. Chronic stress (ongoing overcrowding, constant predator presence, persistent social bullying) can suppress laying for months and may negatively affect the reproductive system long-term.
Disease-related stress is different: some viral infections like Infectious Bronchitis can permanently damage the oviduct, meaning an affected hen may never return to full production even after recovery. This is why prompt veterinary diagnosis of disease-related laying cessation is so important.
What vitamins help chickens lay more eggs?
Vitamin D3 is the most critical — it is essential for calcium absorption from the gut, directly enabling proper eggshell formation. Hens that receive adequate sunlight synthesize D3 naturally; confined or winter flocks may benefit from a D3-supplemented layer feed or dedicated poultry vitamin supplement.
Vitamin A supports the integrity of the reproductive tract mucosa. Vitamin E and selenium act as antioxidants supporting immune function and reproductive health. B vitamins — particularly B12 and riboflavin — are involved in egg development and shell quality. Most quality commercial layer feeds include these at appropriate levels; supplementation is most beneficial in winter, during molt, or for birds on a free-range diet that may lack consistency.
Why are my chickens eating their own eggs (egg eating)?
Egg eating typically begins when an egg is broken accidentally — by a hen jumping in the box, a shell too thin from calcium deficiency, or overcrowded nesting boxes. Once a hen discovers the taste of egg contents, she (and others who observe her) may actively seek out and break eggs to consume them. This behavior can become habitual quickly and spread through the flock.
Solutions: collect eggs 2–3 times daily to reduce opportunity; ensure adequate calcium supplementation to strengthen shells; provide sufficient nesting boxes (one per 4 hens); consider roll-away nest boxes that collect eggs out of reach. As a temporary measure, placing ceramic or wooden "dummy eggs" in nesting boxes can deter pecking. Persistent egg eaters that don't respond to management changes may need to be removed from the flock.
📚 References & Data Sources
- Penn State Extension. (2023). Backyard Poultry Flock Management. Pennsylvania State University College of Agricultural Sciences.
- Mississippi State University Extension. (2022). Managing the Annual Molt in Laying Hens. MSU Extension Service Publication 2288.
- University of Florida IFAS Extension. (2024). Light Management for the Backyard Flock. PS-24, UF/IFAS Extension.
- National Research Council. (2022). Nutrient Requirements of Poultry, 9th Revised Edition. National Academies Press.
- Merck Veterinary Manual. (2024). Infectious Diseases of Poultry. Merck & Co., Inc.
- USDA Agricultural Research Service. (2023). Heat Stress in Laying Hens: Production and Welfare Impacts.
- University of California Agriculture & Natural Resources. (2023). External Parasites of Poultry. ANR Publication 8162.
- Poultry Science Association. (2021). Broodiness in Laying Hens: Causes, Consequences and Management. Poultry Science, 100(3).
- American Poultry Association. (2023). Breed Standards and Production Data. APA Official Publication.
- The Livestock Conservancy. (2023). Heritage Breed Profiles. livestockconservancy.org.
This article is intended for educational purposes. Always consult a licensed veterinarian for diagnosis and treatment of sick birds. Visit VetraPulse.com for more vet-reviewed poultry health resources.
