PORTLAND, Ore. (CN) — The tiny birds gather above the chimney as dusk approaches, flying in erratic, twisting swoops. More birds join, growing the group to thousands. They circle the chimney, finding ...

After spending their summer mating throughout May and June, Vaux's Swifts migrate south toward Central and South America beginning in the fall. After sunset, the birds stay warm by finding chimneys to ...

Vaux's swifts are 4-inch, gray birds that migrate between Canada and Venezuela. Every year, the birds make a pit stop at Agate Hall in Eugene, a popular spectacle for residents. On a temperate, late ...

Since the 1980s, a flock of Vaux's Swifts has been roosting in a Portland chimney during the month of September, on their way to their winter home in Central and South America. Thousands of ...

The Vaux's Swift is a tiny bird – some people call it “a cigar with wings.” But every fall these little birds make a big trip, from summer breeding grounds in the Pacific Northwest down to their ...

PORTLAND, Ore. — A crowd of several hundred people gathered in the growing darkness outside Chapman Elementary School in Portland, Oregon, before the first Vaux's Swift darted into view high above.

No one knows exactly where Vaux's (pronounced "vauks") swifts spend the winter, or the details of their migration route. But we do know the birds need chimneys. AP Photo / The Press Democrat, John ...

A visit by a famous swift has sent Portland, Ore., into a frenzy. We're not talking about Taylor Swift, but the Vaux's swift. It's a tiny bird. Some people call it a cigar with wings. Every fall, ...