It’s certainly unscientific to refer to swallows as forming gangs, but the word seems appropriate at this time of year as swallows “gang up,” sometimes in the thousands, ahead of the fall migration.

Cliff swallows indeed prefer cliffs, building colonies of their gourd-shaped nests along the sheer vertical surfaces, but they also love concrete bridges over creeks and rivers. The underside of ...

Across the region, conservationist Mara Silver’s kiln-fired homes are helping dwindling species endure—and encouraging people ...

“When the swallows come back to Capistrano” is a phrase with a long history in U.S. popular culture. It refers to a colony of cliff swallows located at Mission San Juan Capistrano in Southern ...