Mass culling is expensive, but alternatives, like vaccinating chickens or luring wild birds away from domestic flocks, would also impose logistical and environmental costs. And they may be more expensive,

More than 160 million birds have been culled during the bird-flu outbreak that started in 2022. So why is the U.S. not vaccinating chickens?

Although there's a low risk of an avian flu outbreak among wild songbirds, it's advisable to keep feeders and birdbaths clean, the Department of Environmental Conservation said.