The dark, smudgy streaks on Xavi Bou's photographs suggest the jerky ink tracks created by a malfunctioning printer, but they actually record the various patterns birds trace while flying in flocks.

BND photojournalist Derik Holtmann recently captured images of a huge flock of birds flying in unison before sunset near Illinois 4 in Mascoutah. A gigantic flock of birds is a familiar site around ...

Birds possess an incredible ability to sleep while flying. This allows them to undertake epic migrations spanning continents ...

A swirling “bird tornado” over farmland near Torrington turned out to be a flock of European starlings. While a sight to see, ...

Large clusters appearing on weather radars are likely massive flocks of migrating birds, not storms. A record-breaking 1.2 billion birds were estimated to be migrating in a single night during the ...

A bird has flown non-stop, apparently, from Alaska to the Australian state of Tasmania. And now this young bar-tailed godwit — a member of the sandpiper family — appears to have set a non-stop ...

Across the Northern Hemisphere, satellite tags and backyard observations are revealing a surprising pattern: some birds are not just drifting off course, they are consistently flying in the opposite ...

Red backed shrikes migrate using a fixed schedule, flying in stages with little variation, showing that genetics guide bird ...

As the weather gets chillier, birds are migrating, many crossing New Hampshire on their path to warmer climates. Hundreds of thousands of birds — warblers, tanagers, sandpipers, sparrows, hawks, even ...