Light pollution also had a greater pull during breeding seasons, particularly in the morning.

In light-polluted landscapes, birds' singing time is an average of 50 minutes longer per day. It's still unclear if this hurts bird health or helps.

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 ...

A new study looked at millions of recordings of birdsong and found that some species in areas with more light pollution are active for almost an hour longer than average ...

Sparrows, blackbirds and the great tit are all birds known to sing at a higher pitch (frequency) in urban environments. It was previously believed that these birds sang at higher frequencies in order ...

A European robin, Erithacus rubecula, sings in a tree in Norfolk, England. Studies have linked the sound of birdsong to reduced levels of depression and anxiety. Photograph By David Tipling, Nature ...

Scientists tracking the birds in an experimental forest in New Hampshire have also tracked changes in the forest ecosystem ...

Source: Kentish Plumber, via Flickr. Distributed under a CC BY-NC-ND 2.0 license. Songbirds seem to enjoy singing. And while a great deal of research has investigated the development and production of ...

Source: Kentish Plumber, via Flickr. Distributed under a CC BY-NC-ND 2.0 license. Songbirds seem to enjoy singing. And while a great deal of research has investigated the development and production of ...

(Credit: Hayk_Shalunts/shutterstock) Zebra finch males sing just one song their entire lives. It's a tune to woo females and keep away other males. Now scientists ...