The migration patterns of birds and some marine life most likely follow magnetic field lines; we're not certain on how (is it field strength, density, orientation, etc). So assuming there are any of these animals left that we haven't poisoned to death, their patterns will change as well, along with the environments where they stop along the way.
hoovervillain t1_ja9or2k wrote
Reply to Magnetic pole reversal by Gopokes91
The migration patterns of birds and some marine life most likely follow magnetic field lines; we're not certain on how (is it field strength, density, orientation, etc). So assuming there are any of these animals left that we haven't poisoned to death, their patterns will change as well, along with the environments where they stop along the way.