As fall migration begins in Oregon, the risk of Highly Pathogenic Avian Influenza (HPAI) increases for both backyard and commercial poultry flocks. Wild birds, particularly waterfowl, are known carriers of the virus and can spread it to domestic birds without showing any signs of illness. Cooler temperatures and increased movement of migratory birds during the fall months raise the likelihood of HPAI reaching local flocks.
HPAI can present as sudden death or a rapid decline in flock health. Poultry owners are encouraged to check their birds daily for signs of illness, such as swelling around the head, neck, and eyes, lethargy, or a drop in egg production. Sick birds should be isolated immediately.
The Oregon Department of Agriculture (ODA) urges poultry keepers to report sick or dead domestic birds by calling the ODA Disease Reporting Hotline at 503-986-4711. Reports of wild bird illnesses can be made at 1-866-968-2600.
To help prevent the spread of HPAI, ODA recommends several biosecurity measures specific to the fall season:
– Keep flocks in fully enclosed coops or covered runs.
– Block access to shared water sources like ponds and ditches.
– Remove spilled feed that could attract wild birds.
– Prevent wild birds from roosting near pens by using netting or covers.
– Post “Restricted Access” signs at coop entrances and provide dedicated boots and clothing for poultry areas.
– Clean and disinfect anything that enters the poultry area, including tools and cages.
– Restrict visitors to those with a clear need and keep pets out of poultry areas.
– Quarantine new or returning birds for at least 30 days before introducing them to existing flocks.
Wet weather increases the risk of contamination from mud and standing water. Owners are advised to use covered feeders and waterers, store feed in sealed bins, refresh water frequently, and remove standing water around coops. Tools, boots, cages, and transport containers should be disinfected regularly, bedding should be changed often, and appropriate disinfectants—such as a 10 percent bleach solution or approved commercial products—should be used according to label instructions.
For more information on HPAI and biosecurity practices or to access a printable checklist, contact the ODA Animal Health Program at 503-986-4680.
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