from Cornell that tracked 118 bird species migrations. There is an icon on the right under 'Related Stories' that tells which species and how to identify it on the map.
https://www.allaboutbirds.org/mesme...grate-across-a-map-of-the-western-hemisphere/
https://www.allaboutbirds.org/mesme...grate-across-a-map-of-the-western-hemisphere/
