![[Image of mass group of birds flying through the sunset sky.]](https://blogs.iu.edu/sciu/files/2023/12/barth-bailey-d2uHXWTkGn4-unsplash-1.jpg)
Every year, the skies come alive as billions of birds begin their migration. From the Arctic Tern, with its remarkable marathon around the Earth to the quaint journey of the Dusky Grouse, the avian spectrum is a captivating display of nature’s variability. How do these travelers embark on such extraordinary journeys, navigating through continents and oceans with such precision?