Why Did My Chicken Stop Laying Eggs? 7 Real Causes

Egg-laying is a hormonal response to a specific set of conditions, not a constant, and it stops the moment any one of those conditions changes. Oregon State University Extension names seven real causes — most of them nothing to worry about, a couple worth real attention.

1. Shortening daylight is the single most common cause

Oregon State University Extension is specific: day length can swing from nearly 16 hours in summer to just over 8 hours in winter, and that change causes hens to molt and stop laying, sometimes over several months. To keep production going through winter, day length needs to stay above roughly 12 hours, with 14–16 hours typical for a maintained lighting programme. Light only needs to be bright enough to read a newspaper by, and the bulb type doesn't matter — but once started, a lighting programme has to be kept consistent, since even a single missed day can set production back.

2. Molting redirects the hen's energy to feathers, not eggs

Molting rejuvenates both the feathers and the oviduct (the organ that produces eggs), and while it happens, the hen puts the bulk of her energy into feather growth, leaving little for egg production. Mississippi State University Extension gives a genuinely useful diagnostic: “early molters” lose feathers a few at a time and can take 4–6 months to complete a molt, and tend to be the poorer layers in a flock; “late molters” lose feathers in groups and finish in just 2–3 months, and tend to be the better layers. A slow, drawn-out molt isn't just annoying to watch — it's telling you something real about that hen's laying quality.

One important distinction: normal molting doesn't cause bald patches or localised feather loss. If you see bare spots rather than an overall thinning, that's much more likely to be feather-pecking than a molt.

3. Broodiness switches off laying hormonally

Broodiness — a hen's instinct to sit on eggs to hatch them — triggers hormonal changes that stop egg production outright, not just interrupt it. Oregon State University Extension notes some breeds go broody far more readily than others: Cochins and Silkies are named as particularly prone, Leghorns as rarely broody at all. Collecting eggs daily removes the usual trigger (a full nest), and removing an already-broody hen from nest access for a few days is the recommended way to break the behaviour and get her back to laying.

4. A drop in laying can be the first sign of illness

Oregon State University Extension notes that reduced egg production is often the earliest visible sign of a flock health problem, sometimes appearing before any other symptom. Watch for it alongside lethargy, inactivity, lameness, coughing or a dull appearance — if several birds show similar signs together, that's a genuine reason to get professional advice rather than wait it out. See our health guide for the fuller picture on when a vet call is warranted.

5. Age catches up with every hen eventually

Oregon State University Extension is blunt about this one: every hen's laying eventually declines, normally starting around 2–3 years old, with molts becoming more frequent and prolonged from that point. Some older hens develop real complications — an egg trapped in the oviduct (“egg-bound”), yolks that never reach the oviduct at all (an “internal layer”), or a prolapsed oviduct after passing an unusually large or double-yolked egg. A prolapse in particular needs the affected hen removed from the flock immediately, since other hens will peck at it.

6. Poor nutrition unbalances what egg-laying actually needs

Oregon State University Extension recommends a free-choice layer ration plus separate free-choice oyster shell, with any supplemental treats limited to what hens clear in about 15 minutes. It specifically warns against feeding starter or grower rations to laying hens — the nutrient balance is wrong for egg production, and medications in starter feed can leave residues in eggs. See our feed guide for age-banded intake figures.

7. Stress alone can be enough, even without illness

Oregon State University Extension makes a point worth remembering: laying eggs isn't something a hen needs to do to survive, so it's often the first thing to stop when something's off — even stress minor enough that an owner wouldn't notice it. Moving, handling, overheating, fright, and any lapse in food or water access are all named as real triggers. Predator-proofing, clean facilities, good ventilation and constant access to feed and water all reduce this risk; see our predator-proofing guide for the security side of that.

What this means in practice

• Check the calendar first — if it's autumn or winter and the whole flock has slowed down together, shortening daylight is the most likely explanation, not illness.
• Watch how a molt actually progresses: fast and in clumps usually means a naturally better layer; slow, one feather at a time, usually means a naturally weaker one.
• Treat a production drop in just one or two birds, alongside other symptoms, as a genuine health check trigger — not the same situation as a whole-flock seasonal slowdown.
• Don't assume a hen that's stopped laying is failing — our buying guide already notes a backyard hen can live five to ten years, far beyond her peak laying years.

Sources: Oregon State University Extension (James Hermes), “Why did my chickens stop laying?” (PNW 565, published 2003, reviewed 2023): extension.oregonstate.edu; Mississippi State University Extension, “Molting of Laying Hens”: extension.msstate.edu. Sources checked: September 2026.

Common questions

What's the most common reason chickens stop laying?

Decreasing day length, according to Oregon State University Extension — hens need roughly 12-16 hours of daylight to keep laying, and as natural daylight shortens through autumn and winter, egg production drops even in a perfectly healthy flock.

How long does a molt last, and will egg-laying resume after?

It depends on the hen. Mississippi State University Extension distinguishes "early molters," who take 4-6 months to molt and are generally poorer layers, from "late molters," who molt faster (2-3 months) and are generally the better layers in a flock — so how quickly your hen resumes laying is itself a clue to how good a layer she is.

How old is too old for a hen to keep laying?

Oregon State University Extension says hens produce well until about 2-3 years old, after which production declines and molts become more frequent and prolonged — a high-producing hen may have laid more than 30 times her own body weight in eggs by that point.

Can stress alone stop a hen from laying, even without illness?

Yes. Oregon State University Extension is direct that egg-laying isn't required for a hen to survive, so even minor, easily-missed stress — being moved, handled, overheated, frightened, or briefly without food or water — can be enough to stop it.