A new federal study says contamination from certain house products could be taking a toll on tree swallows in Minnesota and Wisconsin. The U.S. Geological Survey study focused on substances known as ...

TEMPE, Ariz. – 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 ...

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 ...