Add Yahoo as a preferred source to see more of our stories on Google. A pair of cliff swallows bring food to hatchlings hidden in a mud nest beneath a bridge in Oceanside (San Diego County), as seen ...

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 ...

Saturday, March 21, is the Swallows Day Parade in San Juan Capistrano. The cliff swallows fly from Argentina, one of the longest migrations of any species. Cliff swallows are one of more than 350 bird ...

Each spring, certain bridges and underpasses across California sprout brown, muddy barnacles. Who's responsible? Scour a nearby riverbank, and you might catch a glimpse. Colonies of small, chirping ...