The bar-headed goose is famous for its long, annual migration from the Indian subcontinent to central Asia, a flight that takes it over snowcapped Himalaya Mountains so high and dangerous that human climbers struggle just to stay alive.
Read more at NPR: http://www.npr.org/2015/01/15/377321027/highflying-geese-save-energy-by-swooping-like-a-roller-coaster