Well, and not that I necessarily believe this, but a thought that came to mind...what would it look like before the magnetic poles flipped? Would there be disturbances that would confuse the birds’ ability to navigate?
Thats an interesting thought I kind of though about the Sun having an effect though I have no real idea if it could cause something like that.
http://science.nasa.gov/science-news/science-at-nasa/2010/13dec_globaleruption/
I see some people think it’s the New Madrid fault like reawakening I really don’t know what to believe but I find it strange now they even found dead birds in Canada and the river turned green that is probably some kind of chemical though that someone dumped in it.
Is The New Madrid Fault Earthquake Zone Coming To Life?
http://endoftheamericandream.com/archives/is-the-new-madrid-fault-earthquake-zone-coming-to-life
Victoria river mysteriously turns bright green
http://news.nationalpost.com/2010/12/30/victoria-river-mysteriously-turns-bright-green/