The map was created by researchers at the Cornell Lab of Ornithology, who plotted the routes of these groups to understand their paths across land and the open ocean.
As revealed in the moving map, the team found wide similarities in the migration routes of different groups of species.
The team used data from eBird to track the movements of 118 species of birds from January to December, according to Cornell’s online hub for bird enthusiasts, All About Birds.
In the map, color-coded dots show the trajectories of these birds as they head southward in the fall.
Dark blue dots show the birds during January, with light green representing June-July, and red showing December.