A male blue-winged warbler. Long-distance bird migration is one of the natural world's most inspiring phenomena-but the story of how we know what we know about bird migration is almost as amazing as ...

Migratory birds embody some of the most intricate evolutionary adaptations in the animal kingdom, without which their journeys would be impossible. Here’s how the Pfeilstorch taught us this. In the ...

CU Boulder researchers challenge long-held assumptions about the relationship between bird migration and the process by which new species arise Every year, billions of birds take to the skies, riding ...

Answer: It’s too far to walk. Yuk, yuk. In truth, birds fly south in the fall and north in the spring for the same reason many of us do: warmth. But the birds also do it for food and breeding, both of ...