Purple martins are returning from South America. The first "scouts" have been spotted in Michigan. What to know.

From oceans to mountains, these birds with massive wingspans expertly dominate the skies, flying great distances.

It’s not just any bird that strikes fear into the heart of Aussies. The cassowary is one of the world’s largest birds, and it looks like a relic from another geologic era. It’s as tall as a ...