Oregon wildlife officials are warning residents to avoid contact with sick or dead wild birds as cases of highly pathogenic avian influenza continue increasing among migrating waterfowl.
The Oregon Department of Fish and Wildlife says the majority of reported sick and dead birds are being found in the Willamette Valley. Cackling geese, a smaller subspecies of the Canada goose, appear to be particularly affected.
Officials say the virus can spread rapidly among wild bird populations and may also affect other wildlife, including mammals that consume infected birds.
Symptoms of avian influenza can include unusual behavior, lethargy, difficulty flying, loss of coordination, cloudy eyes, head shaking and swimming in circles.
Some infected ducks may carry and spread the virus without showing obvious symptoms. Birds that develop clinical signs typically die within 72 hours.
ODFW is asking residents not to capture sick birds or transport them to wildlife rehabilitation centers. There is currently no effective treatment for infected wild or domestic birds.
People should also keep pets away from sick or dead birds.
Anyone disposing of a dead bird should wear disposable gloves and a mask and double-bag the carcass before placing it in the trash.
Groups of dead wild birds can be reported to ODFW Wildlife Health at 866-968-2600 or by email at wildlife.health@odfw.oregon.gov.
Sick or dead domestic birds, including chickens and turkeys, should be reported to the Oregon Department of Agriculture.
Health officials say the risk of bird flu to the general public remains low, but precautions are important to limit further spread among wildlife.
