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What to Feed Molting Chickens

The short answer

Feed molting chickens more protein. Feathers are 80 to 85% protein while standard layer feed carries just 14 to 16%, which is why Purina recommends moving the flock to a complete feed at about 20% protein until the new coat is in. Top that up with genuinely high-protein treats such as dried black soldier fly larvae, roughly 40% or more crude protein, and cut low-protein fillers like scratch. Expect the molt to run 8 to 16 weeks for most hens, with few or no eggs until it finishes.

Updated · every claim sourced below

The math: 80-85% protein feathers, 16% protein feed

Feathers are 80 to 85% protein, according to Purina, and a molting hen is rebuilding her entire coat of them. Standard layer feed runs just 14 to 16% protein by University of Florida extension figures, because it is formulated for making eggs, not feathers. That gap is the whole story of molt feeding. Each fall, as daylight shrinks, a hen sheds and regrows her full set of feathers, and the raw material for all that keratin, which is itself a protein, has to come through the feed dish. Underfeed protein and the molt drags, the new feathers come in ragged, and the return to laying slips further out. Close the protein gap and you have done most of what a keeper can do.

Switch to a 20% protein feed for the duration

Purina's recommendation is a complete feed at about 20% protein for the length of the molt, up from the 14 to 16% in layer rations. The number on the bag is what matters, so a 20% all-flock or flock-raiser formula does the job, and plenty of keepers use unmedicated chick starter the same way. This question comes up every fall on the forums: "Is there anything special you give your chickens while they are molting?" asks one BackYard Chickens thread, and higher-protein feed is the standing answer. When eggs return, Purina advises transitioning back to layer feed gradually over 7 to 10 days rather than swapping bags overnight.

High-protein treats: dried grubs do the heavy lifting

Dried black soldier fly larvae average 41.5% crude protein, with a published range of 21.6 to 65.5% depending on rearing and processing, per a 2022 peer-reviewed review. Call it roughly 40% or more. Set that against the 16% in layer feed (University of Florida) and the 80 to 85% protein feathers (Purina) your hens are rebuilding, and grubs are the rare treat that pulls the diet toward what a molting bird needs instead of away from it. Mealworms and scrambled eggs work on the same logic; fruit and bread work against it. Keep all treats, grubs included, to less than 10% of the daily diet, the limit Texas A&M's veterinary college puts on chicken treats, and let the complete feed carry the rest.

What to cut: scratch, corn, and the coop light

Scratch grains and cracked corn dilute protein exactly when your hens need it most. Every low-protein mouthful displaces a mouthful of that 20% feed, so shelve the scratch bag until the flock is feathered back out. Cut the supplemental light too. University of Georgia extension is blunt that molt is the flock's rest period, when the reproductive tract rejuvenates for the next laying cycle, and lighting the coop to chase eggs works directly against the rebuild. Handling counts as a cost here as well: pin feathers are wired with blood and nerves, and a hen in heavy molt is sore. Skip the cuddles, keep stress low, and let the protein you are feeding go into feathers rather than fear.

How long it lasts, and why the egg drought is normal

Plan on 8 to 16 weeks for most hens, per Purina, though the sources genuinely spread: Merck's veterinary manual puts a typical molt at 3 to 4 months, and Mississippi State extension notes late molters finish in 2 to 3 months while early molters can take 4 to 6. Expect few or no eggs the whole time. University of Georgia extension puts it flatly: "Molting and egg production are not mutually compatible." The payoff is real, though, because the same UGA guidance notes hens come back from molt laying better-quality eggs. If your molt started during a late-summer heat wave, the two overlap; see chickens not laying in summer heat to untangle which is which.

Molt or something worse? Check the order of feather loss

A true molt runs in a set sequence: head first, then neck, breast, body, wings, and tail last, per Mississippi State extension. It is a diagnostic most keepers never hear. A hen losing head and neck feathers with new pins pushing through is molting on schedule; bald patches that ignore that map tell a different story. Feather loss concentrated at the vent or under the wings points to mites or lice, a bare back points to rooster wear, and ragged spots on one bird while the flock looks fine suggest pecking. If the feathers look normal but the eggs have stopped anyway, work through why did my hens stop laying, because daylight, heat, and age all mimic molt's egg drought.

Quick answers

How much protein do molting chickens need?

About 20% dietary protein, per Purina's molt guidance, up from the 14 to 16% in standard layer feed. Feathers are 80 to 85% protein, so the boost feeds the rebuild directly.

Can I add whey protein to my chickens feed to help them during their molt?

You can, and keepers on BackYard Chickens have asked exactly this, but a bag of 20% protein all-flock or unmedicated chick starter is cheaper, simpler, and nutritionally complete. Whey powder adds protein without the vitamins and minerals a complete feed carries, so use it as a topper at most, not a strategy.

Do chickens lay eggs during molt?

No. University of Georgia and Mississippi State extensions both say egg production stops until the molt is complete. The upside: hens typically return laying better-quality eggs than before.

How long does molting last?

8 to 16 weeks for most hens, per Purina. Mississippi State notes early molters, birds that start in late summer, can take 4 to 6 months, while late molters finish in 2 to 3.

Can I feed chick starter to molting laying hens?

Yes, unmedicated chick starter is a common keeper choice because its protein content sits near the 20% Purina recommends for molt. When laying resumes, transition back to layer feed over 7 to 10 days.

Should I put a light in the coop during molt?

No. University of Georgia extension treats molt as the flock's rest period, when the reproductive tract rejuvenates. Save supplemental light decisions for after the new feathers are in.

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