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 ...

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 ...

While parasites have long been documented, the large fitness cost to their hosts has only recently been addressed via studies of ecology and evolution. Large fitness costs apply to altricial nestlings ...

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 ...

Some birds have taken to humans to an extent we never could have imagined. Three species found at San Angelo now nest in much or all of their range primarily on or in human constructs — buildings, ...

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 ...

The Barn Swallow (Hirundo rustica) is one of eight species of the swallow family that inhabits the state of Texas, and is the only one of its genus. This particular species is an extremely common bird ...

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 ...

They have been here since April and are preparing for their return migration in late September or early October. It will involve an epic journey of 9,500 kilometres to South Africa. Most Irish ...