Why is my chicken losing feathers?
The common causes are molting, external parasites, feather pecking by flockmates, damage from roosters during mating, and poor nutrition. Illness and stress play a part now and then. Because these look alike at first glance, a careful look at the bird and the flock usually sorts them out.
Start by checking more than one bird. If several are losing feathers at the same time of year, molt is likely. If one bird is bare while the rest look fine, think pecking, parasites or a rooster.
Keep a record with dates and photos. Feather loss changes over weeks, and a picture taken every few days shows whether a bare patch is shrinking, spreading or being re-pecked. If you end up calling a veterinarian, those photos and notes save time and help narrow the cause.
- Note which birds and which body areas are affected
- Check the skin for redness, scabs or crawling insects
- Watch the flock for chasing and pulling
How do I recognize a normal molt?
Molt is the yearly replacement of old feathers and usually happens in late summer or fall as days shorten. Feathers drop over several weeks, often from the head and neck first, and pin feathers, which look like small quills, appear as new ones grow in.
Hens often stop laying during a molt because they put their energy into new feathers. Birds in molt may be quiet and a bit touchy about handling, since new pin feathers are tender. It is normal and the flock returns to laying afterward.
Handle molting birds gently, since the growing pin feathers have a blood supply and can bleed if broken. Keep the flock calm, avoid unnecessary handling and make sure feed and water are always available. A few extra weeks of patience is usually all a molting flock needs.
- Many birds affected around the same time
- Pin feathers growing in
- Egg laying pauses
Could mites or lice be the cause?
External parasites irritate the skin, and birds may pick at themselves, lose feathers around the vent and under the wings, and look pale or restless. Some parasites live in the coop and feed on birds at night, so you may need to check after dark.
Part the feathers near the vent and look for moving specks or clusters of eggs at the base of feathers. Look at roosts and cracks in the coop with a flashlight. Your veterinarian or extension office can tell you how to confirm what you have and which management steps are suitable for your flock, since products and rules vary.
- Check birds and roost bars at night
- Clean and dry the coop thoroughly
- Ask your vet before using any product on birds
What if the flock is pecking each other?
Feather pecking can come from crowding, boredom, bright light, hunger for protein or one bossy bird. Look for a pattern in who gets pecked and where. Back and tail feathers are common targets.
Give birds more space, more perches, a varied area to scratch and a complete feed. Removing the main bully for a short time can reset the pecking order. Watch for any bird with an open wound, since other birds will peck at blood, and separate injured birds until they heal.
Bright light and heat both raise irritability in a flock, so check that the coop is not overly lit or stuffy. A bird that is already bare may be pecked harder by others, so offer a place to retreat. Ask your extension office about space guidelines for your birds.
- Provide enough room per bird
- Offer scratching areas and distractions
- Separate any bird with a wound
Is a rooster the problem?
Roosters often wear feathers from the backs and necks of favorite hens during mating, and a hen with a bare back and an active rooster nearby probably has mating damage. If it is severe, extra hens in the flock help spread attention, and some owners use saddles made for the purpose.
Look for skin damage under the bare area and treat any wound by asking your vet how to care for it.
- Check the ratio of hens to roosters
- Look at the skin under bare patches
- Consider separating a rough rooster
Could nutrition or illness be involved?
Feathers are mostly protein, so a poor diet slows regrowth and may cause chewing. Provide a complete feed suited to the age and purpose of your birds and limit treats. During molt, ask your extension office about suitable feed.
If a bird is bare and also lethargic, has swollen eyes, trouble breathing, diarrhea or is losing weight, call a veterinarian. Poultry disease reporting and biosecurity rules vary, so ask your state veterinarian or extension office what applies.
Key takeaways
- Feather loss in several birds at once in fall usually means molt.
- Check at night for mites and lice, and ask your vet before using any product.
- Crowding and boredom lead to feather pecking, so add space and enrichment.
- Call your veterinarian if a bird with feather loss also seems ill.
Sources and further reading
Last reviewed: November 12, 2026. Written by the Homestead & Small Farm Editorial Team. See our editorial policy.