Why is my chicken losing feathers? 7 common causes explained.

Suddenly, your chicken run looks like someone’s ripped open a feather pillow, and your once well-dressed flock now looks half-plucked. It can be alarming the first time you see it – but don’t panic!

Most feather loss has a simple explanation, often just related to a normal stage in a chicken’s life. At other times it can signal stress, pests, or health problems that need a closer look.

In this guide, I’ll take you through the seven most common reasons chickens lose feathers, with clear signs to watch for and straightforward fixes you can try.

Best explanation if chickens are pecking their own feathers.

Preening is normal, and a perfectly healthy behaviour. Chickens keep their plumage healthy naturally by pulling dirt from their feathers and spreading protective oils through the plumage. This is a self-care activity, and nothing to worry about.

But feather pecking (also called plucking) is different. It’s a behavioural problem, and a warning sign.

Often it’s a re-directed behaviour⁽²⁾: chickens naturally want to forage and peck. When they don't have enough opportunity to do that, they may start to peck each other’s feathers. Stress, overcrowding and nutritional imbalances can also contribute.

Sometimes, it escalates into aggressive pecking and bullying, particularly with flock members lower in the pecking order, or newcomers to the coop.

If you see your chickens actively pecking out each other's feathers, you need to take action immediately.

Solution:

• Give your chickens plenty to do. Provide space and suitable bedding for scratching, pecking and foraging. Scatter some of their normal feed through suitable ground cover or bedding, hang leafy greens for them to investigate, and provide other safe forms of enrichment.

• Check their diet. Make sure a good-quality, nutritionally balanced chicken feed makes up the great majority of what they eat. Nutritional deficiencies or imbalances can contribute to feather pecking, but adding high-protein treats isn't a reliable quick fix.

• Look for sources of stress. Check that your chickens have enough space, easy access to food and water, places to escape from more dominant birds and somewhere suitable to dust-bathe.

• If one chicken is being persistently aggressive, you may need to separate her temporarily to protect the rest of the flock while you work out what's triggering the behaviour. My guide to isolating a chicken safely explains how to do that.

Best explanation if your chicken has a bare, red bottom.

Missing feathers and a red, swollen vent usually point to one of three things:

• Red mite or lice infestation, which can cause irritation and feather damage around the vent. 
• Feather-pecking by other hens. 
• A health problem affecting the vent. If the feathers around the vent are dirty or wet, or you notice swelling, discharge or an unpleasant smell, don't assume it's simply feather loss.

Solutions:

• Check carefully for external parasites, including mites and lice. My guide to chicken mites explains what to look for.

• Watch your flock for feather-pecking, particularly around the affected hen. See this section for ways to tackle feather-pecking.

• Keep a dirty vent area clean and dry, but don't rely on home remedies to treat the underlying cause.

• If the vent is swollen, very red, has a discharge or unpleasant smell, or your hen seems generally unwell, contact a poultry-friendly veterinarian. Those signs can have several possible causes, and the right treatment depends on identifying exactly what's wrong.

Best explanation if tail feathers are missing.

If the tail feathers are disappearing as part of a general moult, it's usually nothing to worry about. Pin feathers (the new feather shafts) will begin to appear as the tail grows back.

This is the same hen, showing her new "pin feathers" which will soon grow into her usual lustrous tail.

Solution:

• If your hen is moulting, simply continue to provide a good-quality, nutritionally balanced feed while her new feathers grow. Feel free to add in a little extra protein to support new feather growth.

• If she's losing only her tail feathers, with no other signs of moulting, check for feather-pecking or signs of injury.

• Pin feathers are extremely delicate and sensitive. Try not to touch them while they're growing back, particularly around areas where lots of new feathers are coming through.

Best explanation if feathers are missing on the back.

If your hen suddenly has bald patches on her back, the culprit is usually a rooster (UK: cockerel).

When a male mates, he grips the feathers at the back of the hen's head or neck with his beak and treads on her back with his feet.

Repeated mating can wear away feathers, typically leaving a bare patch on her back near the base of the tail, and sometimes on her sides.

Solution:

• Males often favour one or two hens in the flock. Keep an eye on hens a rooster particularly favours. If feathers are becoming badly worn or the skin is damaged, she needs protection while she recovers. Give her a break by isolating her until the feathers grow back.

• If necessary isolate the rooster for a few days. After all, he's the problem!

• A hen saddle (also known as an apron) can protect a hen's back from further damage while allowing her to remain inside the flock. Make sure to check underneath it regularly to make sure the skin remains healthy and the saddle itself is not rubbing.

• If you don't keep males, look instead for feather-pecking, moulting or another cause.

Best explanation if your chicken looks bald around the head or neck.

There are two main reasons why your chicken may be missing feathers here:

• Naked neck breeds: some breeds (like the Turken) naturally have little or no feathering on their neck. That's perfectly normal for the breed.

• Over-attentive roosters: as above, during mating roosters often grip neck feathers with their bea, so frequent mating can cause feather loss around the head and neck.

Solution:

• If she's a Naked Neck breed, there's nothing to do!

• If a rooster is being over-amorous, see above.

• If the exposed skin looks sore or damaged, protect the hen from further pecking and treat minor wounds appropriately. If there's more significant injury, swelling, or any sign of infection, seek advice from your veterinary practitioner.

Best explanation if your hen looks bare-breasted.

Usually nothing to worry about.

A broody hen who is incubating eggs will creatye what's klnown as a "brood patch". She pulls out her own chest feathers so her warm skin can sit directly against the eggs. This naturally keeps them at the right temperature for hatching.

Solution:

• If you don’t want your hen to hatch chicks, you may need to break her broodiness by isolating her or using other methods to cool her off.

• Otherwise, no action is needed. Once she's finished being broody, the feathers will grow back naturally.

Do chicken feathers grow back?

Yes. Chickens regrow feathers naturally after moulting, bullying, mating wear, or other causes of feather loss.

You’ll notice short "pin feathers" emerging first. These look like little quills with a white sheath, and as they grow, the soft feather unfurls from the tip.

In this photo, one of my Wyandottes is growing her feathers back after a moult. You can clearly see the feathers emerging (where the arrows are).

It’s important to remember:

• In most cases, lost feathers grow back unless the follicle itself has been permanently damaged (which is rare) and the underlying cause has been dealt with.

• Pin feathers are sensitive and can cause pain. Handle moulting chickens gently and avoid putting pressure on areas where lots of new feathers are emerging.

• Timing varies. Re-growth after moulting can take at least two to three months, while after damage (for example, over-mating) it may take longer, depending on the cause.

• If you’ve clipped a chicken's wings for safety, those feathers will also grow back after the next moult, so you'll need to repeat the clipping if safety is still an issue.

Frequently Asked Questions about chickens losing feathers.

Still worried about feather loss? Here are a few quick FAQs covering the questions I hear most often from other chicken-keepers.

Other chicken health articles.

Sources and further reading.

A lot of "facts" you'll find on the internet are often people's individual views, based on inaccurate information repeated from poor quality sources.

The information I provide in this article and others is based not just on my own experience, but on evidenced facts from scientific, peer-reviewed research and books from highly respected and experienced poultry keepers such as Gail Damerow.

Some of the trusted sources I have used in this article are these.

1. The British Hen Welfare Trust is an excellent source of information and support for anyone adopting ex-battery hens.

2. Sedlačková, M: Feather Pecking in Laying Hens: Environmental and Endogenous Factors. Pub. Institute of Animal Biochemistry and Genetics, 2004.