That's the way one scientist puts it — referring to how infected wild birds survive long enough to spread it to birds and ...

"We've gone from this concept of dead birds don't fly to this new virus that seems to be a bit more like dead bird flying ... to North America in late 2021. From there, it went to South America ...

Researchers are reporting mass die offs of wild birds and sea mammals due to bird flu. They're tracking the deaths to better understand the virus and how it might create a greater threat to humans.