More than 60 years later, we can still wake up to the sound of birdsong, but as ubiquitous as the dawn chorus is, it\u2019s not totally clear why birds do it. Now, a new study<\/a> (yet to be peer reviewed) posted to the preprint server bioRxiv offers an explanation.<\/p>\n Birds sing to celebrate the morning, and because they want to Sunrise<\/p>\n Over the decades, scientists have proposed multiple motivations for the dawn chorus, but evidence was scant. Most of the studies relied on observations of birds in the wild where researchers couldn\u2019t isolate the various stimuli at play.<\/p>\n The new study investigates the dawn chorus in controlled laboratory conditions. Researchers were able to control temperature, food availability, social environment, and age, to isolate and investigate the role of light in triggering the dawn chorus.<\/p>\n For more on bird science:<\/p>\n A Cassowary, the “World’s Most Dangerous Bird,” Emerges on Australian Beach<\/a> In the lab, zebra finches wake up hours before the artificial sunrise. They move around in the dark but they don\u2019t start singing until light levels reach a sufficient level. Male zebra finches sang hundreds of different songs but only if the lights were on. In the dark, they remained silent.<\/p>\n In one experiment, the artificial sunrise was delayed by three hours. The finches woke up at the ordinary time but remained silent. Once the lights finally came on, they sang more intensely than normal, as if the extra time built up their emancipation, resulting in more pronounced singing.<\/p>\n \u201cTheir motivation to sing increases while singing is being suppressed by darkness,\u201d the authors wrote, \u201csubsequently producing intensive singing as a rebound from the suppression.\u201d<\/p>\n In a second experiment, light came up gradually over the course of two hours instead of all at once, mimicking the actual dawn sunrise. When the gradual sunrise was delayed, birds started singing earlier and under dimmer light. Moreover, if given a button that turned the lights on for 10 seconds, they pushed it repeatedly, but only if the sunrise was delayed.<\/p>\n This relationship between light, darkness, and singing is also consistent with observations of birds going silent during a total solar eclipse<\/a> and then bursting into a renewed dawn chorus once totality had passed.<\/p>\n The social role of birdsong GettyImages 888299698<\/p>\n Only male zebra finches sing. They learn from a tutor, usually their male parent, for a period of months. Then they practice the song they\u2019ve learned and create their own iteration, which they continue to sing throughout their lifetime.<\/p>\n By contrast, females don\u2019t sing, but they do call to their mates. They also respond to the song of their offspring<\/a>, helping young males learn the sorts of songs mates might enjoy.<\/p>\n Daily singing is a form of practice, allowing males to maintain and optimize their performance over time, increasing their likelihood of attracting a mate. Scientists hypothesize that intense morning singing sessions help them warm up their vocals after the nighttime rest period, so they can better attract mates later in the day. And the new study reveals that they sing because they want to, they\u2019re just waiting for the stage lights to come up.<\/p>\n In the end, it doesn\u2019t really matter why birds sing, we\u2019re just glad they do.<\/p>\n![\"Sunrise\"](\"https:\/\/www.newsbeep.com\/ca\/wp-content\/uploads\/2025\/11\/3860fe84fa002f72891767150217ac08.jpeg\"\/)
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