In the world of birds, where fancy can be as fleeting as flight, the color of the bird apparently has a profound effect on more than just its image. A new study of barn swallows reveals it also ...

A new study led by the University of Colorado at Boulder has shown the testosterone of male North American barn swallows skyrocketed early in the breeding season when their breast colors were ...

If you are a male barn swallow in the United States or the Mediterranean with dark red breast feathers, you’re apt to wow potential mates. But if you have long outer tail feathers in the United States ...

Even after they have paired with a male, the female North American barn swallow still comparison-shops for sexual partners. And forget personality, the females judge males by their looks: the reddish ...

Claim to fame: Thanks to the abundance of barns, old silos, bridges and other human-built structures, barn swallows have become frequent sights in Missouri and elsewhere across much of the United ...

September is a big month for migratory birds. Several hundred species in Washington are heading either south or downslope to escape the impending harsh winter conditions. The very familiar barn ...