Will Chickens Eat a Dead Chicken? Yes, So Get Her Out the Same Day

Yes. Chickens will peck at a dead flockmate, and some of them will eat from her. Penn State Extension’s cannibalism guide puts it plainly: birds “will pick on crippled or dead birds in their pens because of the social order and curiosity.” But the eating isn’t the worst part. What comes after is. A body left with the flock can teach them a habit that’s hard to break. In warm weather it can also start botulism, and that can take more birds with it. The fix is simple, though. You get her out the same day.

I rewrote this page from 12 sources, and you’ll find every one listed at the bottom. The vet side comes from the Merck Veterinary Manual. The behavior side comes from Jacquie Jacob at the University of Kentucky and from Penn State Extension. Three state diagnostic labs gave me their rules for sending in a bird. A USDA checklist tells you when a death needs a phone call. Maine and Kentucky cover composting and burial. The CDC covers gloves and handwashing. Where something is my own reasoning, I’ll say so.

The short version.

• Yes, the flock will peck at a dead bird, and some will eat.
• Take her out the same day. Wear gloves, and wash up after.
• Left out in warm weather, a body can start botulism through fly maggots.
• If you want to know why she died, refrigerate her. Don’t freeze her. Then call a lab.
• Several sudden deaths, or signs like a swollen head or a twisted neck, mean a call to USDA at 1-866-536-7593.
• Never eat a bird that died on its own.
• To keep the living ones from starting, give them room and a perch to escape to. Feed and lighting matter too.

Yes, the Flock Will Peck at Her

Kentucky’s Jacquie Jacob says the same thing as Penn State, in nearly the same words. Hens peck at hurt or dead birds “as a result of the social order and their natural curiosity.” A dead hen is something new lying on the ground. She also can’t peck back. To a flock that sorts itself out by pecking, that’s an open door.

It can go well past pecking, too. Jacob defines cannibalism as birds tearing at a flockmate and eating her skin and tissue. Blood makes it worse. Jacob writes that “chickens are attracted to blood,” and Merck says blood on exposed skin “may induce more pecking.” My read is that once they’ve opened a body up, they’ll keep at it.

The old version of this page told a story about a stormy night and two named hens. I can’t vouch for any of it, so it’s gone. It also said a flock would strip a body to the bones in minutes. I found no source with a timeline like that, so that’s gone too. And it called chickens harmless herbivores. Jacob’s own definition of cannibalism says otherwise.

Why One Dead Hen Can Start a Habit

Here’s the part that worries me more than the eating. Jacob writes that “Cannibalism is a learned behavior that can spread quickly through a flock.” Chickens copy each other. In her words, “Poultry have a tendency to imitate each other.” So one bird that learns a flockmate is food can teach the rest of your run.

The Merck Veterinary Manual says no single cause of cannibalism has been pinned down. It ties it to crowding and bright light. Genes and an off diet play a part too. Then it names one more cause, in so many words: “failure to remove any dead birds daily.” Penn State lists it as well. “It is best to remove sick or injured birds from the flock as soon as possible,” that guide says, because “Once pecking starts it can quickly develop into a vicious habit.”

Once it’s a habit, you’re in for a fight. Merck says “once this habit gets established it is difficult to eliminate.” Jacob says it from the other end: “Cannibalism is easier to prevent than to treat.” So my rule is simple. Don’t give the flock the lesson at all. A dead bird that’s gone before they find her teaches them nothing.

The Bigger Risk Is Botulism From the Body

Botulism is a poisoning. Jacob’s extension page describes it as a nerve toxin made by a bacterium, Clostridium botulinum. A dead body is one of the places that bacterium grows. Merck’s poultry botulism chapter says that during an outbreak, “the main spreading factor is the carcass-maggot cycle.”

Here’s how that cycle runs, per Merck. When an animal dies, the bacteria grow in the body and make toxin there. Maggots of the flies that feed on dead animals eat that toxin. Then a bird eats the maggots. Jacob puts the flock side of it this way: birds get botulism when they eat “infected carcasses or maggots that have been in infected carcasses.” A hen pecking at a dead flockmate in July is doing just that. Merck adds that cannibalism “often leads to transmission of infectious diseases” as well as botulism.

Heat matters. Merck says the toxin needs a temperature “of 25°C or higher.” By my math that’s 77°F. Merck notes that this may be why waterfowl outbreaks come mostly in summer and fall. In a cold winter, my read is that the botulism risk drops. The pecking doesn’t. And it can show up fast: “Incubation periods in poultry range from 2 hours to ~2 weeks.”

Signs, from Jacob’s page: the legs and wings go paralyzed, and then the neck goes limp. Merck’s other name for the disease is limberneck. “Neck feathers become loose in the follicle and can be easily plucked,” Jacob adds. A bird that eats enough toxin can die “in 12 to 24 hours.” If you see a bird go limp, call a vet. The guides list treatments, but dosing is a vet’s call, so I’m not repeating them here.

Two more things worth knowing. “Botulism is not spread from bird to bird,” Jacob writes, so it’s the body and the maggots you’re up against. And Merck reports more poultry cases lately tied to “free-range systems.” If your hens free-range, that’s you.

Bodies aren’t the only source, either. Jacob’s pecking guide says to pick up any greens the birds leave “so that the greens do not spoil, potentially causing botulism.” Our list of what not to feed chickens covers spoiled food. Before a scrap goes in the run, our free can chickens eat it checker tells you if it’s safe and how much your flock can have.

Get Her Out the Same Day

Every source I read lands on the same advice. On preventing botulism, Merck says rapid and proper disposal of dead birds “is the most effective method.” Jacob says dead birds “should be quickly removed from the flock.” Her botulism page says to “Incinerate or bury dead birds promptly.”

So here’s how I’d do it. These steps are my own, put together from the sources above.

• Gloves on. The CDC says to “Wear gloves when cleaning bird cages and poultry houses.” Picking up a dead bird is the same kind of job.
• Bag her where she lies. Use two bags, one inside the other. Penn State’s lab asks for a double bag “to prevent any leakage during shipment,” and I figure it keeps flies off her too.
• Look her over first. Note any wounds, and anything odd about her head or comb. Write down the date and what you saw.
• Take her bedding too. Scoop up whatever she was lying on and bag it. Merck lists replacing the litter as one way to cut losses in a botulism outbreak.
• Count the rest. Watch for any bird that’s off her feed or water.
• Wash up. The CDC says to wash your hands “thoroughly with soap and water” after you touch poultry or their space.

Then decide where she’s going. You’ve got two roads. One is a lab, if you want to know why she died. The other is disposal. Both are below. Either way, she leaves the run today.

Want to Know Why She Died? Chill Her, Don’t Freeze Her

A necropsy is an animal autopsy, and state diagnostic labs do them on backyard birds. For birds that die soon after you buy them, the CDC says to “contact your veterinarian or local cooperative extension agent to investigate the cause of death.” I’d do the same for any death I couldn’t explain. Every lab I checked says the same thing about the body. Keep it cold, but don’t freeze it. California’s lab gives the reason: “freezing interferes with the necropsy examination.”

Here’s what three labs said when I read their pages on October 27, 2026. Prices and rules change, so check yours first.

• Delaware (the Lasher Laboratory, University of Delaware): “Currently, there is no charge to the backyard grower for Avian Influenza and Necropsy.” Refrigerate the bird, or put it in an iced cooler. “Please do not freeze.”
• California (UC Davis’s CAHFS lab): up to two birds for $35, plus shipping, for birds located in California. Out of state, it’s $300 for 1 to 8 birds. A body can stay refrigerated “for no more than three days prior to shipment.” Pack it with frozen cold packs, not ice cubes.
• Pennsylvania (Penn State’s Animal Diagnostic Laboratory): a backyard necropsy “starts at $58,” with a first report within 3 business days after it’s done. Keep the bird “refrigerated and do not freeze.” Ship it overnight in an insulated box with gel ice packs. Don’t ship on a Friday.

If your state isn’t one of those, your vet or your county extension office can point you to the right lab. Call before you pack anything. My own rule is that if I’m going to send her, I decide that day. The fridge clock starts the minute she’s found.

When One Death Is a Phone Call

One dead hen isn’t always news. USDA’s checklist for reporting unusual bird deaths starts there: “Some bird death is normal. A large percentage of dead or dying birds in your flock is not normal.” It says to rule out the obvious first, like a predator or the weather. A raccoon kill or a heat wave is a different problem from a hen that just dropped.

The checklist also lists signs to look for in the birds that are left. Here they are, in its order:

• Reduced energy or appetite.
• Lower egg production. Soft-shelled or misshapen eggs.
• Swelling of the head and eyelids.
• Swollen comb, wattles or shanks.
• Purple color on the comb or wattles. The legs too.
• Difficulty breathing.
• Runny nose, sneezing.
• Twisting of the head and neck.
• Stumbling or falling down.
• Diarrhea.
• Decreased activity.
• Tremors.
• Circling.
• Complete stiffness.

If you see those, or deaths you can’t explain, USDA’s words are “Report any signs of illness or unexplained deaths to animal health officials right away.” The checklist gives USDA’s number, 1-866-536-7593. It also has a line for your state veterinarian. I’d call one of them before I did anything else with the body.

Burying or Composting One Hen

First, the rule nobody should need. Maine’s extension bulletin on getting rid of dead backyard poultry says “No mortality should be used for human consumption.” A bird that died on its own doesn’t go in the pot.

Composting works, but it’s a built system, not a kitchen bin. Maine’s pile is a cone at least 5 feet high on an 8-foot base. The bulletin says “this size is necessary to create and maintain required heat.” A pile that size takes about 200 adult birds. It needs at least 5 cubic yards of mixed litter and shavings just to start. Done right, it holds 130 to 150°F for at least three days running. Then it cures for at least three months before it goes on a garden. Maine wants it away from wells, “preferably at least 100 feet.”

My read: one hen in a backyard bin is nowhere near that. If your compost never gets hot, I wouldn’t put a dead bird in it. That goes double if you don’t know what killed her.

Burial has rules too, and they’re state rules. Kentucky’s state veterinarian, for one, wants a grave that’s, among other things:

• At least 4 feet deep.
• Covered with 2 inches of quicklime and at least 3 feet of earth.
• At least 100 feet from water. That means any well or spring, and any stream or sinkhole.
• The same 100 feet from a public road or a house. Stables count too.

Your state may want something else, so ask your state veterinarian or extension office. The same Kentucky sheet says a permitted landfill may take carcasses, but contact your local landfill first. And if raccoons or dogs can reach the spot, my read is that deep matters most.

Keep the Living Ones From Starting

Since the habit is easier to stop before it starts, here’s what the sources say to set up ahead of time. Most of it is plain good flock keeping.

• Room. Penn State gives 2 square feet a bird from 16 weeks on, and half that for bantams. Our chicken coop ideas page runs the space numbers for a few coop styles.
• Light. No more than 16 hours a day. Penn State and Jacob both say never to brood under a white bulb stronger than 40 watts.
• Feed. Jacob ties pecking to feed that’s short on protein. Salt and phosphorus come up too. My take is that a complete layer feed from the feed store beats a scrap diet every time.
• Nests. One nest for every 5 hens, per Penn State, and Jacob wants them dark. Our bucket nesting box page covers a cheap one.
• A way out. Merck lists “providing perches as a refuge for targeted birds.” Our chicken roost ideas page has the spacing numbers.
• Something else to peck. Penn State suggests a big handful of fresh greens a day for a backyard flock. Jacob says “Four to eight lengths of white polypropylene twine” hung in the pen can pull pecking away from flockmates.
• Flock size. Jacob cites research saying flocks should have “either fewer than or more than 30 birds.” Right around 30 is the awkward size.
• New birds. Penn State says to quarantine them for at least 4 weeks before they join your flock.
• Hurt birds. Pull them out. Penn State says to “Humanely remove any badly injured or overly aggressive birds.” It also suggests an anti-peck spray or ointment on damaged ones.

If pecking has already started, Jacob’s list of fixes includes dimming the lights to 0.5 to 1.0 foot-candles. She’d also add feed and water space. More perches and nest boxes help too. And walk the run every day, so nothing lies there long enough to teach them anything.

Sources

• Rocio Crespo, Merck Veterinary Manual: Cannibalism in Poultry (last updated September 2024).
• Martine Boulianne, Merck Veterinary Manual: Botulism in Poultry (full review February 2024).
• Jacquie Jacob, University of Kentucky: Feather Pecking and Cannibalism in Small and Backyard Poultry Flocks (Extension).
• Jacquie Jacob, University of Kentucky: Botulism in Poultry (Extension).
• Phillip J. Clauer, revised by Megan Lighty with Kayla Niel, Penn State Extension: Poultry Cannibalism, Prevention and Treatment (updated June 15, 2026).
• Penn State Animal Diagnostic Laboratory: Back Yard Poultry Information Page.
• University of Delaware, Lasher Laboratory: Poultry Diagnostics.
• UC Davis CAHFS: Backyard Flock Submission Form.
• USDA APHIS: Checklist To Report Unusual Mortality (Program Aid No. 2235-7, July 2019).
• University of Maine Cooperative Extension: Safe Disposal of Backyard Poultry Mortalities (Bulletin #12).
• Kentucky Department for Environmental Protection with the Kentucky Department of Agriculture: Poultry Disposal (updated February 2025).
• CDC: Backyard Poultry (Healthy Pets).

Sources checked October 27, 2026. The 77°F figure is my conversion of Merck’s 25°C. The step-by-step for removing a bird is my own, put together from the sources. So is my advice to keep a dead bird out of a backyard compost bin that never gets hot. We aren’t vets. If birds are sick or dying, call a vet who sees poultry, or the USDA line above.

Related read: How to Raise Chickens for Eggs — Instant PDF download. Secure checkout by Stripe