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 ...

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 ...

As spring begins, so does a fresh song at daybreak, unique to the season. Just before the sun rises, birds start singing their melodies, creating a chirpy symphony. “It's the epitome of spring,” says ...