We are all familiar with Northern Hemisphere birds which migrate far south for the winter, including Arctic Terns, many shorebirds, and landbirds such as Yellow-billed Cuckoo, Bobolink and Blackpoll Warbler, all of which migrate to the equator and further south, sometimes into Argentina.
What about reverse migrants, called Austral Migrants?
Several shearwaters breed in the far south Atlantic and Pacific oceans, but the Wilson's Storm-petrel probably holds the extreme south-to-north travel record, from breeding in Antarctica and its surrounding islands and then migrating to the northern extremes of both the Atlantic and Pacific Oceans.
There are also some land birds which migrate from southern South America north to the equator, and sometimes overshooting far to the north, such as Fork-tailed Flycatchers.
