Before former Mayor Giuliani destroyed local television in NYC by selling off city-owned WNYC-TV Channel 31, I used to be able to catch international television programs that bought time to air their shows. One of these was a block of Japanese news and entertainment every weekday morning. I recall eerie events happening in Japan involving Sarin gas. As it all turned out, a bizarre cult called Aum Shinrikyo was out and about testing their homebrew chemical weaponry, murdering innocent people in the process.
Now Warren Ellis has found this:
Mystery as thousands of birds fall from sky
Acting chief veterinary officer Fiona Sunderman said toxins were the most likely cause but the deaths could be due to anything from toxic algae to chemicals and pesticides.