“For the first time, scientists at the Cornell Lab of Ornithology have documented migratory movements of bird populations spanning the entire year for 118 species throughout the Western Hemisphere. The study finds broad similarity in the routes used by specific groups of species—vividly demonstrated by animated maps showing patterns of movement across the annual cycle. The results of these analyses were published today in the Proceedings of the Royal Society B.“
This still image above doesn’t do justice to this animated map of bird migrations (species key here). While modern humans by and large are tied to particular plots of land, not all species have that same approach to gathering and using resources.