MAGNETIC POLE SHIFT

There is no explanation for many recent global phenomenon:

Birds fall from sky:
Arkansas 5000
Sweden
Louisiana 500 birds
Kentucky
South Dakota
Death Fish:
Kent, Britain 40,000 crabs
Chesapeake bay, 2 million fish
Maryland
Brazil
New Zealand
Colombia thousands of fish
And more recent Florida, also thousands of fish.

For those who had been following this kind of news, watching maybe for the end of world scenario, this news are very alarming. The insides of these dead birds are melted almost and the firework explanation is kind of bull.
So what causes all of this ?
Most recent some are going as extreme as magnetic pole shift, watch the video link at the bottom, or read the article from Fox News and Natural News, links at the bottom as well.
But there are some saying that a 2012 Magnetic pole reversal is a complete hoax, link provided too.So who we are to believe?
I am not complete convinced in a doomsday scenario 2012 complete pole reversal yet, but I do believe a shift may cause all this, and if that is the case how much more will be shifting and what else are we to fear from this ?
If anyone has a theory feel free to post it.

MAGNETIC POLE SHIFT? COREXIT? THOUSANDS OF DEAD FISH NOW WASH UP IN FLORIDA
http://www.foxnews.com/scitech/2011/01/06/magnetic-north-pole-shifts-forces-closure-florida-airport/
http://www.naturalnews.com/030996_bird_deaths_pole_shift.html
http://www.2012hoax.org/magnetic-pole-shift