Beauty is in the eye of the beholder—even if that beholder is a barn swallow. Depending on where the birds live, some of them may favor mates with a paler chest color while others find a redder chest ...

1. In many parts of the world, changes in agricultural land-use have led to significant declines of bird species, including aerial insectivores such as barn swallows. In particular, barn swallow ...

This is a preview. Log in through your library . Abstract Life history theory describes the optimization of important trade-offs within an individual's lifetime and predicts that an individual's ...

Beauty is in the eye of the beholder—even if that beholder is a barn swallow. Depending on where the birds live, some of them may favor mates with a paler chest color while others find a redder chest ...

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 ...

Ecological and Evolutionary Connections Between Animal Behavior and Population Biology. As a behavioral and evolutionary ecologist, I am fascinated by relationships among different scales of ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

Marking a sure sign of spring, the birding organisation BirdLife Finland has reported the first barn swallow (Hirundo rustica) sighting of the year in Helsinki. The last time the bird was seen this ...