Chicken Molting and How to Help Your Flock Through It

Your hens look like they lost a pillow fight, there are feathers drifting across the run every morning, and the egg basket has gone from a dozen a day to two. That is almost always chicken molting, the yearly feather replacement that hits most flocks in late summer and fall, and it is normal even when it looks alarming.

The trouble is that a hard molt also overlaps with the things that actually do need attention, like mites, poor feed, and bullying. Here is how I tell them apart on our place, what I change in the feed room, and how long you should expect to wait before the eggs come back.

What chicken molting is and when it starts

Molting is the process of shedding worn feathers and growing a new set. Feathers are about 85 to 90 percent protein, so a hen rebuilding roughly 8,000 of them needs her body to stop spending protein on eggs. That is why laying slows or stops completely.

The trigger is shorter days. Once daylight drops below about 12 hours, usually from September in most of the northern half of the country, hormones shift and the old feathers loosen. First year pullets often skip a full molt in their first fall. Hens 18 months and older will molt every year after that.

Feathers usually fall in a predictable order: head and neck first, then the back and breast, then the wings and tail. Watching that sequence helps you separate a true molt from feather loss caused by something else.

Soft molt versus hard molt

Not every bird molts the same way. Some hens drop a few feathers at a time and keep laying a little. Others go nearly bald in two weeks.

Your best layers often molt fastest and hardest. Slow, drawn out molts that last four months are more typical of hens that were not laying much to begin with. That is useful information if you are deciding which birds to keep for another season.

Is it molting or something else?

Before you assume molt, pick up a few birds and look closely. Check these points in order:

1. Pattern. Molt is fairly even and follows the head to tail order. Loss concentrated on the back and the back of the head often points to a rooster or to pecking.
2. Skin. Molting skin is clean with pin feathers poking through. Scabs, redness, or crawling specks at the vent mean mites or lice.
3. Legs. Raised, crusty scales on the shanks are a separate problem, covered in our guide to scaly leg mites in chickens.
4. Behavior. A molting hen is quiet and a bit grumpy but still eats. A hen that is hunched, not eating, and has a pale comb needs a closer look for illness.
5. Weight. Run your hand over the keel bone. A sharp keel during molt means she is losing condition, which is a feed issue. Our article on reading body condition walks through how to score this by hand.

How to feed a molting flock

Feed is where you can actually make a difference. Standard layer feed runs about 16 percent protein and 3.5 to 4 percent calcium. During molt, hens need more protein and much less calcium, because they are not making shells.

What I do from the first heavy feather drop until the flock is mostly covered again:

• Switch to an all flock or grower feed at 18 to 20 percent protein. A 50 pound bag usually costs only $2 to $4 more than layer pellets.
• Put oyster shell out free choice so any hen still laying can take what she needs.
• Offer a small handful of dried mealworms or black soldier fly larvae per bird, about a tablespoon each, a few times a week. Do not let treats go above 10 percent of the diet.
• Keep water clean and full. A molting hen drinks as much as ever, and dehydration slows feather growth.

Expect feed consumption to rise even though eggs are down. Growing feathers costs energy, especially as nights cool.

The common advice to add a coop light, and why I disagree

You will see plenty of advice to add a light on a timer to keep 14 to 16 hours of day length and skip molt entirely. It works in the sense that eggs keep coming. I do not recommend it for most small flocks.

Molt is how a hen rebuilds. Feathers wear out, and a bird going into winter with ragged, broken plumage loses heat faster. Hens pushed through without a rest also tend to have a shorter laying life overall. You get eggs in December and fewer total eggs over her lifetime.

There is also a fire risk. Heat lamps and cheap clamp lights in dusty coops cause barn fires every winter. If you want winter eggs, the better plan is to stagger ages: add a few spring pullets each year, since first year birds often lay through their first winter without any light at all.

Handling and housing during the molt

Pin feathers are full of blood and are sore to the touch. Pick up molting birds only when you must, and hold them firmly against your body instead of grabbing at the back.

A few housing changes help:

• Cut drafts at roost level, but keep ventilation near the roof. A damp coop is worse than a cool one.
• Watch for pecking. Exposed pin feathers look red and attract attention. Pull a bird that is being picked on for a week or two.
• Consider a hen saddle for birds with a bare back if you keep a rooster.
• Skip moving birds, introducing new flock members, or deworming routines that add stress, unless there is a real health need.

Most hens start laying again 2 to 4 weeks after the new feathers are fully in. If daylight is already short by then, some will wait until late winter. That is normal, and more posts on flock care are in our raising animals section.

Frequently asked questions

How long does chicken molting last?

Most hens finish in 8 to 12 weeks, and some soft molters wrap up in about a month. Good layers often molt faster than poor ones. If a bird is still bare after four months, check her for mites, poor body condition, or illness.

Why are my chickens molting in spring?

A spring molt is usually a stress molt. A sudden cold snap, a predator attack, an empty waterer for a day, or a move to a new coop can all trigger feather loss. Fix the stress and the bird normally recovers without help.

Should I stop giving layer feed during molt?

Switching to a higher protein all flock feed is a good idea while most of the flock is molting. Keep oyster shell available separately so any hens still laying get calcium. Go back to layer feed once egg production picks up again.