Free-range backyard chickens seem immune to the massive bird flu outbreak in chicken factories Jun1 by Joseph Saraceno An ongoing bird flu outbreak that has devastated the U.S. poultry and egg industries seems to be leaving backyard chicken farms mostly untouched in what experts are calling an epidemiological mystery. MORE Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Google+ (Opens in new window) Related