There is ample evidence that distance has a strong negative effect on migration. Despite its significance in migration decisions, scholars rarely explore the migration distance effect deeper than the ...

Researchers found drier winters impact the likelihood of Kirtland’s warblers surviving migration and their ability to survive the breeding season. Credit: Nathan W. Cooper, Smithsonian’s National Zoo ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. The painted lady butterfly—or Vanessa cardui—is a traveler ...