Most birds have distinct calls that tend to stay the same. It’s how birders can recognize a species without seeing it. But new research shows these tunes can change. Over the course of two decades, ...

Birds are singing almost an hour longer each day: Here's why By Michael Franco August 21, 2025 The researchers know that birds sing longer in light-polluted areas, but aren't sure if that's a positive ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Laura Molles is so attuned to birds that she ...

Not all birds sing, but those that do — some several thousand species — do it a lot. All over the world, as soon as light filters over the horizon, songbirds launch their serenades. They sing to ...

The sound of birds singing is synonymous with spring. As delightful as the tweets and chirps may be, these songs are actually tied to the birds’ survival — and a combination of day length, sunlight ...