|Source: Wikimedia Commons.|
However, today it was reported that approximately 500 red-winged blackbirds (the same species found dead in Arkansas) and starlings fell from the sky in Labarre, Louisiana, hundreds of miles south of the original bird deaths. Early reports from Louisiana also state that the birds suffered some trauma, although an official cause has yet to be determined.
One theory on the mysterious deaths is that the mere sound of new year's fireworks could have startled the birds, causing them to fly into buildings or billboards. Although, you have to wonder why we've never heard of fireworks (launched every year for new year's, the fourth of july, weddings, fairs, and numerous other events) causing birds to die in large, concentrated groups.
I think that we're definitely going to have to stay tuned to this story to see what happens after the birds from Louisiana are analyzed more closely, and also watch to see if more birds die in other areas -- which most certainly wouldn't be attributable to fireworks.