Laying & age

Molting in Backyard Hens: Timing, Feeding and Why Laying Stops

Field guide · Updated October 14, 2026 · about 6 min read

Every fall many backyard flocks suddenly look scruffy: feathers pile up in the coop and the egg basket comes back light. That is usually the molt, the yearly rest in which a hen replaces worn feathers and her reproductive tract regenerates. This page sums up what extension services say about timing, length, feeding and how to tell a molt from other feather loss.

Molt at a glance

Question	What the sources say
What triggers it	Shorter days. University of Georgia Extension: decreasing day length in the fall triggers the onset of molt. University of Maine Extension's Donna Coffin: "It has nothing to do with air temperature." Kentucky Extension adds that faulty light timers, physical stress, poor nutrition, dehydration or extreme heat can set off an unexpected molt.
When	Most adult hens molt once a year, usually starting in fall, roughly August through October (Arizona Extension).
First molt	Pullets hatched in spring or summer won't molt in their first autumn (Arizona). Feed maker Purina puts the first molt at around 18 months of age.
How long	About 1–2 months for most breeds (UC Cooperative Extension). Kansas State gives 1–2 months for some breeds and 3–5 months for older or fancy breeds; Kentucky gives 4–6 weeks for commercial strains and 3–4 months for heritage breeds. A whole flock can take several months because each bird finishes at a different time (Arizona).
Eggs	Most hens stop laying until the molt ends (Mississippi State).
Afterwards	Kansas State: hens often lay more eggs in a given period after molt, with better shell and interior quality. Arizona: production and egg quality should improve in the second laying cycle. UC notes production is typically reduced by about 15% following each molt.

Why laying stops

Molting replaces old, worn feathers and rejuvenates the oviduct. While it is under way, Oregon State Extension says, the hen puts most of her energy into growing feathers, leaving little for eggs. UC Cooperative Extension describes the reproductive tract as taking a break to regenerate, and lists weight loss and feather loss as common signs. Feathers are protein-heavy: Purina describes them as 80–85% protein.

Timing matters. Oregon State warns that when hens molt during long days, the molt often is not complete and hens may never be restored to full production. It recommends letting hens molt in their second winter, under short days, so they molt more completely and return to laying when long days come back.

Keepers who want eggs through fall can try to hold off the molt with light. Kansas State suggests natural plus artificial light totaling about 16 hours, and Maine's Coffin recommends 14 to 16 hours, added before molting begins. Oregon State says even a one-day lapse in lighting can hurt production, so use a timer (see supplemental lighting).

The order feathers drop

A natural molt follows a set pattern, so a hen is never bare all at once. Mississippi State gives the sequence as head, neck, breast, body, wings, then tail; Kentucky's is the same (head, neck, chest, body, wings, tail). On each wing, the primary flight feathers go before the secondaries, starting with the primary nearest the short axial feather and moving out toward the wing tip. Each wing usually has 10 primaries.

Head — the first feathers to go (Mississippi State, Kentucky, Kansas State).
Neck.
Breast (Kentucky: chest).
Body.
Wings — primaries before secondaries, from the axial feather outward to the tip; usually 10 primaries per wing (Mississippi State).
Tail — the last to be replaced.

Diagram drawn by HenClass from the Mississippi State, University of Kentucky and Kansas State Extension publications cited on this page. Zones are approximate.

Good layer or poor layer? Late vs early molters

Mississippi State Extension uses the molt to sort better layers from poorer ones. The key is the primary wing feathers:

	Late molter	Early molter
Lays before molting	12 to 14 months	Can start molting after only a few months of production
Length of molt	About 2 to 3 months; feather loss and regrowth overlap	About 4 to 6 months; a few feathers at a time
Primary feathers	Lost in groups of two or more	Lost one at a time
Looks	Ragged and tattered	Smoother, better groomed
As a layer	Generally better; back to full production sooner	Generally poorer

Commercial strains: 4–6 weeks (Kentucky).
Most breeds: about 1–2 months (UC; Kansas State says "some breeds").
Late molters (better layers): about 2–3 months (Mississippi State).
Heritage breeds: 3–4 months (Kentucky).
Older or fancy breeds: 3–5 months (Kansas State).
Early molters (poorer layers): about 4–6 months (Mississippi State).

Chart drawn by HenClass from the UC Cooperative Extension, Kansas State, Kentucky and Mississippi State figures cited on this page. Individual hens vary.

What to feed during the molt

The sources agree on the basics: keep a complete, balanced feed in front of the birds. They differ on whether to raise protein.

Stay on layer feed (UC). UC Cooperative Extension's Pitesky and Reimers advise backyard keepers to keep feeding the laying ration. Birds in a flock molt at different times, and they argue a molt ration given to a laying hen is more dangerous than a laying ration given to a molting hen.
Consider more protein (Arizona). Arizona Extension says to give free access to a palatable, balanced diet and to consider raising protein during molt — for example a higher-protein layer feed, or a high-protein supplement such as mealworms or a commercial top dress.
Feed-company view (Purina). Purina's nutritionist recommends a complete 19% protein feed once feather loss begins, and mixing back to regular layer feed gradually over 7–10 days.
Keep the extras in proportion (Oregon State). Feed layer ration free choice, offer oyster shell free choice in a separate feeder, and give supplements only in amounts hens clean up in 15 minutes, or none. Don't feed starter or grower diets to layers.

For protein and calcium levels by feed type, see feeding laying hens.

Molt care checklist

Feed and water available at all times (Oregon State, Kentucky).
Handle birds less: the skin where new feather shafts emerge is sensitive (Purina).
Don't add new birds to the flock during molt (Purina), and avoid other stresses Oregon State lists: moving, handling, fright, overheating.
Keep any lighting schedule steady; Kentucky lists faulty timers as a cause of unexpected molts.
Expect many more loose feathers around the coop and roosts (Arizona); keep bedding clean and dry.
Don't try to force a molt. Commercial operations force a molt by reducing light and limiting feed intake (Kansas State), aiming for a 20–25% loss in body weight (Kentucky); Kansas State advises consulting an extension specialist before attempting one.

Molt or something else?

What you see	Likely cause
Fall or winter feather loss in a set pattern, new feathers emerging in sheaths	Natural molt (Kansas State, Georgia)
Bare spots in one area; broken or frayed feathers, sometimes only quills left	Pecking, often from boredom or overcrowding. Oregon State: molt does not cause localized bare spots.
Whole flock losing feathers fast	A serious stress event such as lack of water or feed, or lighting problems (Oregon State)
Mites around the vent or under leg scales	External parasites; treat the whole flock and housing (Kansas State). See mite treatment options.
Bare backs in a flock with roosters	Mating damage; feathers usually regrow (Kansas State)
Laying stops but feathers look normal	Day length, broodiness, disease, poor nutrition, stress or age (Oregon State). See how long hens keep laying.

HenClass does not give veterinary advice. If birds look sick, or a drop in laying comes with other symptoms, contact a veterinarian or your county extension office; Oregon State notes a drop in egg production is often the first sign of disease.