How worried should we be about spring migration spreading bird flu?

A bald eagle infected with bird flu is being treated at the University of Minnesota Predator Center.

Victoria Hall

A record outbreak of bird flu since 2021 has devastated poultry farms and birds flocking to shorelines, raising new fears the virus could become endemic in wild birds. There have already been reports of the virus spreading to other species, including foxes in England, grizzly bears in the US and farmed minks in Spain. And an 11-year-old girl in Cambodia died of bird flu. All of this raises concerns…