Every year, billions of birds migrate in and out of the United States. And across the world, birds fly thousands of miles to reach their seasonal destinations. Some birds, like the Arctic tern ( ...

Every year, billions of birds undertake intrepid journeys between temperate regions in North America and their tropical ...

Radar data from Colombia reveals how tropical winds shape bird migration and pose new challenges for conservation.

Many birds fly, but some, like penguins and ostriches, don't, revealing an evolutionary twist. Flightless birds adapted to ...

A Pulitzer Prize-winning weekly covering West Marin, including the towns of Point Reyes Station, Inverness, Bolinas, Stinson Beach, Marshall, Nicasio, Lagunitas, Woodacre, San Geronimo, Forest Knolls, ...

This video shows hundreds of thousands of purple martins swarming throughout downtown Nashville, Tennessee, last summer. Each ...

Most birds that migrate travel at night. Migrating to and through Northern Virginia now, for example, is the ruby-crowned kinglet, a four-inch-long bird that forages actively at all levels.

Despite its tiny stature, the smallest bird native to North America can survive cold nights in the Rocky Mountains, and some ...

One billion birds die from window strikes each year in North America. There are a few things people can do to help them find ...