Bird flu hits a second Sioux County egg-laying facility in four days. Nearly 6 million hens are being destroyed to contain the deadly disease.

Another flock has been hit by bird flu here in iowa tonight -- it's the sixth this year -- and the fourth reported in a sioux county flock...The other two were

It’s possible that a warm fall delayed the migration of wild birds, which are carriers of the deadly virus. It has recently infected three Iowa flocks.