Backyard chickens make up 37% of active bird flu cases. Here's what that means for you and your flock
The United States is once again dealing with an avian influenza outbreak, and if you keep backyard chickens, it’s worth paying attention. The current situation is far smaller than the 2025 outbreak that wiped out millions of commercial birds and sent egg prices soaring, but bird flu is still spreading in flocks across the country, and small backyard operations are not immune.
As of April 2026, there are roughly 62 active cases in the U.S., according to Dervan Bryan, assistant professor of poultry science at Penn State University. Twenty-three of those cases involve backyard flocks. If you own pet chickens, that number should be enough to make you review your setup, understand the warning signs and know what to do if your birds, or you, start showing symptoms.
What avian influenza is and why this outbreak matters
Avian influenza is a highly contagious disease caused by Influenza A viruses that primarily infect wild aquatic birds and domestic poultry. It shows up in two forms. Low pathogenic avian influenza (LPAI) often causes no signs of illness or only mild ones like reduced egg production or ruffled feathers, while highly pathogenic avian influenza (HPAI) causes severe illness and kills infected poultry at high rates. The 2025 outbreak was HPAI, and that’s the strain that continues to worry veterinarians and poultry scientists.
“The virus is highly contagious and it affects all avian species and it can be very devastating,” Bryan told Campus Insights Media. “We are concerned about the highly pathogenic avian influenza because this one has a very high mortality rate in domestic avian species.”
The birds most commonly affected are ducks, swans, geese, chickens and turkeys. The virus has also been reported in dairy cows, marine animals, wildlife, pets and humans.
Bird flu symptoms in chickens to watch for
If you own backyard chickens or pet chickens, knowing what a sick bird looks like is the first line of defense. Backyard flocks usually contract bird flu through direct contact with infected wild birds, such as migratory ducks and geese, or indirectly through environments contaminated by wild bird saliva, nasal secretions and droppings. That means even a well-kept coop can be exposed if wild birds pass through the yard.
According to the American Veterinary Medical Association, bird flu symptoms in chickens include the following.
- Sudden death with no prior signs of illness
- Low energy or reduced appetite
- Purple discoloration or swelling of the comb, wattles, head or legs
- Reduced egg production
- Soft-shelled or misshapen eggs
- Nasal discharge, coughing or sneezing
- Lack of coordination
If you notice any of these signs, contact your veterinarian or local extension agent right away. They can help identify the cause and offer guidance on preventing further spread. Avian influenza is a reportable disease, so cases must also be reported to your state or local health department.
Bird flu symptoms in humans and how people get infected
The risk to humans remains low, but it’s not zero. The Centers for Disease Control and Prevention has recorded 71 total human cases of A(H5) bird flu in the United States since February 2024, according to the CDC situation summary. Two of those cases resulted in death.
People generally catch bird flu through prolonged, unprotected close contact with infected live or dead animals or their bodily fluids. Touching your eyes, nose or mouth after handling a contaminated surface can transmit the virus, as can breathing in contaminated dust. You can also get infected by eating undercooked poultry, beef or eggs, or by drinking unpasteurized milk.
Symptoms of bird flu in humans, according to a CDC exposure handout, include the following.
- Fever and chills
- Cough, sore throat, difficulty breathing or shortness of breath
- Eye tearing, redness or irritation
- Headaches, runny or stuffy nose
- Body aches
- Diarrhea
If you’ve been around sick or dead birds and you start feeling any of these symptoms, tell your doctor about the exposure. The good news is that antiviral treatments like oseltamivir are already available if infection does occur.
How to protect your backyard flock and yourself
Prevention is the whole game with bird flu. The CDC lays out a clear protocol for anyone tending to poultry that could be exposed, and the guidance is worth taking seriously even if your birds seem healthy.
Before entering the coop, put on snug goggles, disposable gloves, disinfectable rubber boots, an N95 or well-fitting facemask, fluid-resistant coveralls and a head cover. While you’re in your gear, don’t touch your face, don’t eat or drink and try to avoid stirring up dust, feathers or waste. Never touch sick or dead birds, their droppings or contaminated surfaces without PPE.
When you’re done, remove PPE in this order. First, disinfect boots, then remove boots, coveralls and gloves. Wash your hands. Then remove goggles, head cover and respirator, disinfect the goggles, toss the respirator and wash hands again. Clean or discard all PPE, using an EPA-approved disinfectant effective against influenza A on reusable items, and keep used gear out of the house until it’s cleaned. Wash your under-PPE clothes with detergent, dry them on high heat and shower right after.
Keep wearing PPE in contaminated areas until no infected birds, eggs, droppings or litter remain. Self-monitor for symptoms for 10 days after your last exposure and contact USDA or your State Animal Health Official if you’re unsure when that exposure window ends.
Bird flu news and reasons for cautious optimism
The outlook isn’t all grim. Harvard Health points to several developments that could ease the trajectory of this outbreak over time.
Some birds appear to be developing immunity to the virus, which could slow spread between birds and to other animals. Virus strains may also mutate to spread less efficiently or become less deadly, meaning this outbreak may ultimately pose little threat to human health. Human-to-human transmission hasn’t been detected so far, which makes it less likely that H5N1 becomes the next pandemic. And if human infections do become more common, vaccines could be developed to meet the need.
For now, the best thing backyard chicken owners can do is stay informed, stay protected and stay in touch with a veterinarian who knows your flock.
The video “Spring migration increases bird flu concerns across US,” featuring Dervan Bryan, assistant professor of poultry science at Penn State University, was first published on Campus Insights Media.
This article was created by content specialists using various tools, including AI.
