Backyard Chickens / Health

Stages of Seasonal Feather Loss and Feather Growth

A stately Barred Rock hen

I have beautiful chickens… and I’m not just saying that because they’re my chickens. It wasn’t too long ago that they were just a pair of raggedy looking ladies with cowlicks and bald spots, suffering through their seasonal molts (albeit with dignity).

When I look at them now, with their full and fluffy new coats and bright combs again, I’m amazed at what those ladies went through to shed and regrow all their feathers in a relatively short period of time.

A beautiful Cochin hen

Have you ever wondered what actually happens during a molt? How and why they start, and when those pin feathers unfurl into beautiful plumes?

All birds are born with a circadian clock, an internal time-keeper, you might call it. This circadian clock tells the bird the right time to lay, the best time to molt, and in some species, the proper time to fly south for the winter. Throughout a bird’s life, the circadian clock adapts itself to the environment and falls in rhythm with not only the amount of light present in any given season, but also the intensity of that light. (This is why birds living along the equator still molt, despite the days and nights staying consistent year-round; tropical climates all have wet seasons and dry seasons, with subtle changes in the intensity of sunlight that the birds are sensitive to.) The circadian clock is located in a bird’s pineal gland near the front of the brain. The pineal gland is “wired” to the eyes, which helps the bird perceive light. It’s the same organ responsible for the drop — and renewal — of egg production in the fall and spring.

In the Northern Hemisphere, we see the circadian clocks at work when the onset of fall in September brings reduced daylight. Our hens suddenly hunker down, slow or cease their egg laying, and seemingly break out in pillow fights every night.

Molted feathers

Barred Rock feathers

To prepare for winter, their bodies are telling them to drop all the old feathers and regrow new ones for better insulation and weatherproofing. Since feathers are primarily composed of protein, egg production is often sacrificed in order to channel their protein reserves to their new coats.

Molting takes a lot out of a chicken, and you’ll sometimes find your flock to be less enthusiastic and energetic during this time. They might move at a slower pace or retreat from the flock altogether; they might eat a little less and their combs will pale in color. They’ll feed very little on crushed oyster shells, if at all, since they don’t need the extra calcium while on egg hiatus.

Because of this, it’s important to maintain a routine during your chickens’ molts and avoid subjecting them to physical, mental, or environmental stress, such as changing their diets, moving them to new quarters, or introducing new flock members. Picture how you feel when you’re down and out; you probably don’t want to do very much aside from resting, sunbathing, and hoping you’ll get over it soon!

Resting chicken

For an adult hen, an annual seasonal molt can take anywhere from two months up to six months, with three to four months being the norm. Your latest molters are also your fastest molters, completing their cycles in as little as two months; these hens are typically the most prolific layers as well, and are most desirable in terms of production birds. Your earliest molters will take the longest to regrow their feathers, and generally don’t begin laying again until spring; they tend to lay fewer eggs compared to their quick-molting counterparts.

Chickens generally molt in a predictable pattern from head to tail and from primary to secondary wing feathers (moving from axial feather to wing tip).

Pin feathers growing out

Molting from the neck down

Molting hen

Molting chicken

If your chickens are going through soft molts, you might not notice this pattern as it often looks like new feathers grow in place of old feathers right away.

But if your chickens are going through hard molts — as Kimora, my intrepid Barred Rock, did this past season — it’s truly a fascinating study on the stages of seasonal molting.

When a chicken starts shedding her feathers, they’re replaced by brand new ones called blood feathers (or pin feathers). Blood feathers look like little pins or porcupine quills. They’re so called because they have a blood supply flowing through the spikes (stiff hollow tubes known as feather shafts), similar to the way blood flows through veins. This blood provides the necessary nutrients to a developing feather. Most of the blood is concentrated in the base of the shaft, while the feather itself is encased in a waxy coating in the tip of the shaft.

Pin feathers

A hard seasonal molt

Hen in hard molt

A hen in molt

Sometimes the shaft will crack or break, causing the feather to bleed. If you have a Cochin, with her abundantly feathered feet, this is fairly common as the pin feathers on her feet can snap off from normal walking. The pin feather stage is very painful for a hen, which is why most do not like to be handled while it happens.

Molting feet

Pin feathers on a Cochin's feet

You might notice in your hens that the shafts start out as tiny nubs as they’re “pushed out” of the follicles, then become very spiky with a tightly rolled appearance. As the shafts grow longer, the waxy casing loosens and the shafts take on a “furry” look as the feathers start to emerge from the tip.

During a molt

Pin feathers

Blood feathers

New feathers growing in

Newly emerged feathers

Over the course of the molt and through normal preening, this waxy casing falls off to reveal the new feather. The feather unfurls and the shaft eventually dries up, becoming the quill you’re probably familiar with. (Remember the quill pen from the days of yore? It uses the hollow shaft as an ink reservoir.)

Preening her pin feathers

Preening the waxy casing off her pin feathers

A fully grown feather is a beautiful thing. Take a look at all its parts.

Anatomy of a chicken feather

Newly emerged feathers are vibrant, soft, and glossy, and a hen keeps her coat looking gorgeous with help from her uropygial gland (also known as the preen gland or oil gland). Pull back the tail feathers on your hen and you’ll find a tiny nipple-like nub called a papilla. (I’ll admit that the first time I found this nub, I panicked slightly and thought it was a fatty tumor!)

Preen gland

Oil gland

New feathers

Fluffy butt feathers

The papilla secretes a special preen oil — I liken it to a luscious body oil we women might spray on ourselves. The hen rubs her head and beak against the gland opening, and then spreads the oil all over the feathers on her body and wings and the skin on her legs and feet. Instant luxury! If you’ve ever watched your ladies bury their beaks in their tails and wondered what they were doing, chances are, they’re preening themselves with preen oil.

At the end of their molts, your hens should be back to their happy selves again, scratching in the dirt and clucking away at the first sign of worms. When they go through the process all over again next year, you can help keep them healthy through winter and regrow beautiful feathers.

Scratching in the dirt

Looking for worms

Happy and healthy

Linda Ly About Author

I'm a plant lover, passionate road-tripper, and cookbook author whose expert advice and bestselling books have been featured in TIME, Outside, HGTV, and Food & Wine. The No-Waste Vegetable Cookbook is my latest book. Garden Betty is where I write about modern homesteading, farm-to-table cooking, and outdoor adventuring — all that encompass a life well-lived outdoors. After all, the secret to a good life is... Read more »