It's like 'dead birds flying': How bird flu is spreading in the wild
That's the way one scientist puts it — referring to how infected wild birds survive long enough to spread it to birds and mammals around the world. And that's a serious risk for human health.
![It's like 'dead birds flying': How bird flu is spreading in the wild](https://npr.brightspotcdn.com/dims3/default/strip/false/crop/4000x2250+0+375/resize/1400/quality/100/format/jpeg/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Fd9%2F47%2Fa0e33f324ba9adf9d4cf07f5e939%2Fbird-flu-1.jpg)
![Deceased elephant seal pups line the beach at Punta Delgada in Chabut, Argentina, along with a bird carcass. Cause of death: bird flu.](https://npr.brightspotcdn.com/dims3/default/strip/false/crop/4000x3000+0+0/resize/4000x3000!/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Fb0%2F8a%2F014617fc453cbd44e402b856fbe9%2Fbird-flu-2.jpg)
That's the way one scientist puts it — referring to how infected wild birds survive long enough to spread it to birds and mammals around the world. And that's a serious risk for human health.
(Image credit: Ralph Venstreets/University of California, Davis)