Yes, it's well understood that birds are required to hasten flight times in the southern hemisphere. These birds, unlike the ones in question in this thread, are a product of artifical selection. We bred them to be stronger, endure further, and fly faster; we took them right to the peak of perfection. The birds in this thread were also selected, but they were selected to preform by nature, not man. As a result, they are perfectly adapted to survive on a flat earth.
It's painfully apparent. All you have to do is open your mind to the truth and let your prejustices fly away.