It’s now official. The bald eagle is America’s national bird. The official declaration does just that — make it official.

A bald eagle found standing on a DuPage County street has been euthanized after it was determined the animal was suffering from bird flu.

A bald eagle found in Chicago's western suburbs has been euthanized after it was suspected of being infected with bird flu. On Friday of last week, the eagle was spotted with its head drooping in Hinsdale.

The increase in cases in the state comes as a Louisiana man with underlying health conditions died from the disease on Monday. Experts say those who come into contact with wild birds or other animals like cattle should take precautions.

Bird flu is increasingly sparking concern across the country and in Illinois, following news this week of the first human death from the virus in the U.S., and of birds found throughout Illinois with suspected cases of the illness.