Bird flu case forces killing of 5.3 million chickens in Iowa - Phys.org

The confirmation of bird flu at another Iowa egg-laying farm will force the killing of more than 5 million chickens, state officials said Friday.

In this Oct. 21, 2015, file photo, cage-free chickens walk in a fenced pasture at an organic farm near Waukon, Iowa. The confirmation of bird flu at another Iowa egg-laying farm will force the killin… [+2351 chars]

full article...