Bird Deaths... Getting Weird

First a few hundred dead birds appeared suddenly and without explanation in Arkansas. Ok... strange. Never heard of something like that before.

Then, yesterday, a few hundred dead birds appeared suddenly and without explanation in Louisiana. Now that's a really strange thing.

Then a few thousand dead fish show up in a river in Arkansas. What?

Then a few hundred tons of dead fish show up on a beach in Brazil?

Then a few hundred dead birds show up on a street in Sweden? Are you joking me?

EOTWAWKI?