The Complete Molt Survival Guide: Feed, Light, and Timeline
Why Your Hens Stopped Laying — And Why That's Normal
Every fall, as daylight hours shorten, most laying hens go through a process called molt — a natural, annual shedding and regrowth of feathers. During this time, egg production slows dramatically or stops entirely. For first-time flock keepers, this can be alarming. For experienced producers, it's a predictable part of the annual cycle that, managed well, actually improves long-term flock productivity.
This guide covers everything you need to know about molt: when it happens, how long it lasts, what to feed, how to use light, and what to watch for.
When Does Molt Happen?
Watch: "The Complete Molt Survival Guide Feed Light And Timeline" (1:03)
Most hens experience their first molt at approximately 16–18 months of age — after their first laying cycle. After that, molt typically occurs annually in late summer or early fall as day length decreases.
The trigger is photoperiod — the number of hours of light per day. As days shorten below approximately 14 hours of light, the hen's reproductive system naturally slows down and molt begins.
Stress can also trigger or accelerate molt at any time of year: heat stress, water deprivation, disease, sudden feed changes, or predator disturbance can all cause a stress molt outside the normal seasonal window.
How Long Does Molt Last?
Molt duration varies significantly by individual bird and management practices:
- Fast molters: 8–12 weeks. These birds tend to lose feathers rapidly and regrow them quickly. Fast molters are generally preferred in commercial operations.
- Slow molters: 4–6 months. These birds lose and regrow feathers gradually. Egg production resumes more slowly.
- Overall flock molt is rarely synchronized — expect a rolling 2–4 month window where some birds are in various stages of molt simultaneously.
What to Feed During Molt
Feathers are approximately 85% protein. During molt, your hens are directing the majority of their nutritional resources into feather regrowth rather than egg production — which means their protein requirements go up significantly.
Increase protein during molt:
- Switch from standard layer feed (typically 16% protein) to a higher-protein feed (18–20% protein) during active molt
- Options include flock raiser, grower, or broiler feed — or a layer feed specifically formulated for molt support
- Supplement with high-protein treats: mealworms, black soldier fly larvae, sunflower seeds, or cooked eggs
Reduce or eliminate scratch during molt. Scratch grains are high in carbohydrates and low in protein — feeding heavy scratch during molt is counterproductive and will slow feather regrowth.
Calcium management: During molt, hens aren't laying, so they don't need high calcium intake. Excess calcium during non-laying periods can stress the kidneys. Reduce or eliminate oyster shell supplementation until laying resumes, or switch to a lower-calcium grower feed entirely.
Lighting During Molt: To Supplement or Not?
This is one of the most common questions flock keepers have during molt — and the answer depends on your goals.
If you want to extend laying and delay molt: Maintain 14–16 hours of light per day using supplemental lighting. This suppresses the hormonal trigger for molt and keeps hens in production longer. Many commercial and small-farm producers use this strategy to maximize the laying year.
If you want to allow natural molt and reset the flock: Let day length drop naturally and allow molt to proceed on its own schedule. This gives hens a genuine rest period and often results in a stronger laying season after molt completes. Many pasture-based and small-flock keepers prefer this approach.
Once molt has begun, do not abruptly restore light. Suddenly increasing light on a hen mid-molt can cause incomplete feather regrowth, poor egg quality when laying resumes, and reproductive complications. If you're going to supplement light, commit to it consistently or plan your molt around a natural light reduction.
What to Watch for During Molt
Molt is stressful for hens, and their immune function is somewhat suppressed during active feather loss. Watch for:
- Pinfeathers — new feathers emerging from the skin. These are sensitive and blood-filled; avoid handling molting birds unnecessarily and prevent roosters from mounting hens with active pinfeathers.
- Pecking and cannibalism — bare skin and blood-red pinfeathers can trigger pecking behavior. Ensure adequate space, reduce flock density if possible, and provide enrichment to redirect behavior.
- Weight loss — some weight loss is normal during molt. Severe weight loss is not. Monitor body condition and increase protein if birds are losing too much condition.
- Respiratory illness — suppressed immunity makes molting flocks more vulnerable. Keep coops clean and well-ventilated.
When Will Laying Resume?
Most hens resume laying 6–12 weeks after molt begins, depending on the individual bird and management. The first eggs after molt are often slightly larger than pre-molt eggs, and shell quality typically improves — one of the genuine benefits of allowing a full molt cycle.
Hens that have completed molt and resumed laying under good nutritional management often outperform their pre-molt production for the first several months of the new laying cycle.
Tracking Molt in Flock Steward
Flock Steward's molt cycle tracking (available on the Producer plan and above) lets you log molt onset, feather regrowth progress, and the return to laying for individual flocks. This data is invaluable for planning feed purchases, managing cash flow during the low-production window, and understanding your flock's seasonal patterns year over year.