Bird flu surges among poultry amid a scaled back federal response

Some 3.5 million chickens, turkeys and ducks have had to be destroyed because of bird flu outbreaks in the last 30 days.

Migrating wild birds are spreading the virus to domesticated flocks, increasing the risk of eventually seeing a human outbreak. Scientists are troubled by the muted federal response.

(Image credit: MATTHEW HATCHER/AFP)