Mass deaths of birds have been noted about 16 times in the past 20 years, the PBS NewsHour reports.
In January 2011, we read about the current Spate of mass animal deaths baffling scientists ee:
50 dead jackdaws found on city street in Sweden
100 tons of sardines, croaker and catfish wash up dead on the coast of Brazil
Hundreds of fish dead in New Zealand
Hundreds of dead starlings and robins in the Kentucky town of Gilbertsville
An estimated two million dead fish washed ashore in Chesapeake Bay, Maryland
450 red-winged blackbirds, brown-headed cowbirds, grackles and starlings found dead on a highway in Baton Rouge, Louisiana
3,000 dead blackbirds on roofs and roads in the small town of Beebe, Arkansas
Thousands of drum fish washed along a 20-mile stretch of the Arkansas River
Thousands of dead fish found floating in warm Florida creek
Scores of American Coots found dead on Texas highway bridge
And in Britain, 40,000 devil crabs found dead near Thanet in Kent.
It has been suggested that there is a link between some of these deaths and John P. Wheeler, III, the special assistant to the secretary of the Air Force from 2005-2008, who was recently found dead in a Delaware landfill.
John Wheeler, 66, was last seen 28 December 2010 on a train from Washington to Wilmington.
His body was found on 31 December, as a garbage truck emptied its contents at the Cherry Island landfill.
His death has been ruled a homicide. (Dead Birds, Dead Fish and One Murdered Military BioWeapons Expert ...)
Wheeler's military career included writing a manual on the effectiveness of biological and chemical weapons. (BioWeapons Expert.)
His work involved "standing up Cyberspace Forces and placing Precision Strike technology."
The town of Beebe is less than 20 miles from the Little Rock Air Force Base.
In 2010, it was reported that some Air Force researchers were testing high-powered microwave blasts to knock small robo-planes out of the sky. (Dead Blackbirds in Arkansas)
According to Paul Joseph Watson and Alex Jones of PrisonPlanet.com "Electromagnetic scalar weapons that can artificially manipulate the environment could be responsible for the mass die offs.
"We know for a fact that over a decade ago the U.S. Military Industrial Complex was aware of and involved in the testing of such technology."
The bird deaths and the death of John Wheeler are explained here: Twelfth Bough: some problems are unpatriotic