
There are several reasons why chickens lose their feathers. The most common is moulting, which occurs once a year, usually in the fall, when chickens shed their old feathers and grow new ones in preparation for the winter. This process can take anywhere from one to three months. Other causes of feather loss include stress, a diet deficient in protein, mating, and feather plucking due to aggression or boredom. Providing chickens with adequate protein, space, and distractions can help prevent feather loss and support healthy regrowth.
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What You'll Learn
- Molting: Chickens lose old feathers and regrow new ones, usually in the fall
- Diet: Deficiency in protein may lead to chickens eating their feathers
- Mating: Roosters hold onto hens' backs during mating, causing feathers to break
- Lice and mites: Lice congregate at the base of feathers, causing itching and burning sensations
- Stress: Stress can trigger molting, which leads to feather loss

Molting: Chickens lose old feathers and regrow new ones, usually in the fall
Molting is a natural process that occurs in chickens, typically in the fall. During molting, chickens lose their old feathers and regrow new ones. This process usually happens in late summer or early fall when the days start to get shorter, as chickens prepare for the winter months.
The molting process can vary in intensity and duration among individual chickens. Some hens may shed their feathers rapidly, appearing almost naked, while others may lose and regrow their feathers so gradually that the change is barely noticeable. The degree of molting can also vary from year to year for the same chicken.
Feathers are primarily composed of protein, so a diet deficient in protein can lead to feather-eating habits in chickens. Chickens may start pulling out their own feathers or the feathers of other chickens in the flock and eating them to compensate for the lack of protein in their diet. This behaviour can be challenging to stop once it starts and may require intervention.
In addition to protein deficiency, other factors such as stress, bullying within the flock, and inadequate nutrition can also contribute to feather loss during molting. It is important for chicken owners to observe their flock's behaviour and provide a well-balanced diet to support healthy feather growth and maintenance.
During the molting process, chickens may stop laying eggs temporarily as their reproductive organs take a break. This pause in egg-laying allows chickens to replenish their calcium and other nutrient stores in preparation for the upcoming breeding season.
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Diet: Deficiency in protein may lead to chickens eating their feathers
While there are numerous reasons for chicken feather loss, one of the most common is molting, the annual process of shedding old feathers and growing new ones. This typically occurs in the fall, when the days become shorter, in preparation for winter. During this time, it is recommended to increase protein in your chicken's diet to aid in feather regrowth.
Indeed, a deficiency in protein can lead to chickens eating their feathers. Feathers are made up mostly of protein, so chickens who aren’t getting enough in their diet will seek it out where they can. This can lead to chickens plucking their own feathers or eating those that have already fallen out. In extreme cases, chickens may even seek out blood and cause injuries to each other.
Chickens require diets with between 15-17% protein, and this can be achieved through protein-based treats such as mealworms, canned tuna or mackerel, scrambled eggs, chopped meat, sunflower seeds, or by switching to a ration designed for meat chickens (20-21% protein).
It is important to note that other factors can also cause feather loss, such as stress, changes in light, bullying, or mating habits. Therefore, it is recommended to observe your chickens and identify any patterns in feather loss to determine the root cause.
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Mating: Roosters hold onto hens' backs during mating, causing feathers to break
There are several reasons why a chicken may lose its feathers, and mating is one of them.
During mating, a rooster uses his beak and claws to hold onto a hen's neck and back, which can cause the feathers on her back to break and be worn off. This is known as treading. A rooster will often pick out a few favourite hens, and this can lead to excessive damage to their feathers and skin. Sometimes, a hen is mated so frequently that a rooster's claws can cause abrasions to the skin of her back. In some cases, deep wounds can become infected, resulting in gangrene and possibly the death of the hen.
To prevent this, you can use a hen mating saddle, which is a cloth garment worn by a hen to protect her feathers and skin. These are available in three different sizes and can be washed and stored for future use. If you have multiple roosters, you can also minimise treading damage by housing them in separate coops and letting each run with the hens for only a few hours a week.
However, it is important to note that feather loss in chickens can also be due to other factors. For example, chickens moult their feathers once a year, usually in autumn, to shed old plumage and prepare for the cold by regrowing new feathers. A diet deficient in protein can also lead to feather-pulling and eating, as feathers are made up mostly of protein. Additionally, external parasites such as lice or mites can cause chickens to spend a lot of time preening their feathers, which can result in feather loss.
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Lice and mites: Lice congregate at the base of feathers, causing itching and burning sensations
Lice and mites are common external parasites that can cause feather loss in chickens. Lice congregate at the base of feathers, particularly near the vent, under the wings, and on the head. They cause itching and burning sensations, leading chickens to peck at their feathers. This can result in feather loss and even full-blown cannibalism within the flock.
Lice are fast-moving, six-legged, flat insects with round heads. They are typically straw-colored and can be seen scurrying around when inspecting feathers near the vent. Mites, on the other hand, can be grey, dark brown, or reddish and are often found along feather shafts and underneath roosts after dark. Both lice and mites are parasites that feed on dead skin, feather quill casings, and other debris.
To prevent and treat lice and mite infestations, regular cleaning of the coop is essential, especially disposing of loose feathers that can harbor hatching eggs (nits). It is important to limit visits from fellow poultry keepers as they may unintentionally transport parasites on their clothes, footwear, or equipment. Keeping poultry feed secure and quarantining new birds are also recommended to minimize the risk of introducing parasites into the flock.
Providing chickens with adequate dusting areas, known as dust baths, is crucial for their skin and feather health. These dust baths help chickens maintain their feathers and control parasites naturally. Additionally, using products like Preen Queen as a dust bath additive can help keep feathers clean and oil-free, reducing the attraction of mites and lice.
In the case of an infestation, Elector PSP, a spinosyn-class insecticide, can be used to kill both adult parasites and their nits with a single application. Treating birds after they have roosted for the night is the easiest way to handle the entire flock with minimal stress.
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Stress: Stress can trigger molting, which leads to feather loss
Molting is a natural process in a chicken's life cycle, where old feathers are shed and new ones grow. Chickens typically molt in late summer or early fall, when the day length begins to shorten. This process is triggered by hormonal changes in the chicken's body, which are influenced by the shortening of daylight hours. While molting is essential for a chicken's health and comfort, it can be a stressful and physically demanding experience.
Stress is a common trigger for molting in chickens, and it can lead to feather loss. When chickens are stressed, their bodies go into a state of emergency, shutting down non-essential functions to conserve energy. This can cause physical and behavioral changes, such as weight loss, lethargy, and reduced egg production. Stress can also make chickens more sensitive to touch and handling, and they may become extra cautious and seek hiding places to feel safe.
To support chickens during a stressful molt, it is important to minimize stress levels. This includes avoiding introducing new visitors, changes, or additions to the flock. Providing a safe and comfortable living environment, such as a wooden chicken coop with ample hiding places and clean bedding, can help reduce stress. Additionally, ensuring access to fresh food and water is crucial, as chickens require extra nutrients, especially protein, to support the growth of new feathers.
While molting is a normal process, stress-induced molting can be rapid and partial, causing chickens to lose feathers quickly. This can make them more vulnerable to infections and cold weather, so providing supportive care during this time is essential.
Chickens may also experience stress due to factors such as boredom, lack of space, or improper diets. Ensuring that chickens have adequate space, entertainment, and a balanced diet can help reduce stress levels and potentially prevent stress-triggered molting.
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Frequently asked questions
There are several reasons why chickens lose their feathers. The most common is moulting, which is the natural shedding of old feathers and the growth of new ones. This usually happens in late summer or early autumn. Chickens can also lose feathers due to stress, nutritional deficiencies, or parasites.
Moulting is the process by which chickens shed their old feathers and grow new ones. It usually occurs in late summer or early autumn when the days get shorter. During moulting, chickens will lose their feathers in a particular order, starting with the head and moving down to the neck, body, back, wings, and tail.
It is important to provide your chickens with a high-protein diet during moulting to support feather development. You can also give them protein-based treats or temporarily switch to a meat chicken ration (20-21% protein). Ensure their environment is stress-free and provide dust bathing areas to maintain the health and appearance of their skin and feathers.
Other reasons for feather loss in chickens include nutritional deficiencies, such as a lack of protein, stress, and external parasites such as mites, lice, and rodents. Chickens may also lose feathers due to aggressive behaviour from other chickens or roosters during mating.









































