Cliff swallows are said by ornithologists to show the highest degree of colonization of any of the 89 swallow species in the world. Colonies can number from 200 to more than 2,000 nests. They could be ...

The tree swallow is typically a straightforward enough bird to identify, even for newer birders. With shiny, almost iridescent teal upperparts and white below, they cut a striking figure as they swoop ...

Barn swallows are found all over the world. You can spot a barn swallow on six continents: North and South America, Europe, ...