Indiana is among over 30 states experiencing an outbreak of avian bird flu -- but what does that mean for residential bird feeders?

The Indiana State Board of Animal Health said Monday that laboratory testing of a commercial duck flock in Elkhart County has come back as presumptively positive for the virus.

Laboratory testing of a second commercial duck flock in Elkhart County came back as presumptively positive for the virus, the Indiana State Board of Animal Health said.

Nearly 7 million chickens and turkeys in 13 states have been killed this year due to avian influenza, prompting officials and farmers to acknowledge that, despite their best efforts, stopping the disease from infecting poultry is incredibly difficult.

Laboratory testing of a fourth commercial turkey flock in Dubois County has come back as presumptively positive for the virus, the Indiana State Board of Animal Health said. The samples are being verified at the U.S. Department of Agriculture’s National Veterinary Services Laboratory in Iowa.

Avian influenza has been detected in a fourth commercial poultry flock in southern Indiana, state officials said Saturday.

A strain of avian flu that can cause high mortality rates among birds has been confirmed at a commercial turkey farm in southern Indiana, federal and state agencies said Wednesday.

After nearly two years of increases and a historic spike last fall, grocery prices have started to drop in Indiana.

Indiana's state veterinarian says a recent bird flu outbreak is a reminder of the importance of all buyers and sellers of poultry to follow state record-keeping rules.

Since Saturday, there have been no new H7N8 cases in the Dubois County avian flu outbreak.