Auf der ganzen Welt singen Vögel länger in leichten Gebieten | Eine Verhaltensanalyse von fast 600 Vogelarten legt nahe, dass die Lichtverschmutzung durch die menschliche Entwicklung die Zeit verlängern kann, die die Vögel um fast eine Stunde pro Tag verbringen

>Light pollution makes birds work overtime.

A behavioral analysis of nearly 600 bird species suggests that light pollution from human development can lengthen the time birds spend singing [by nearly an hour per day](http://www.science.org/doi/10.1126/science.adv9472), researchers report August 21 in *Science*.

>The extension’s magnitude took the researchers by surprise. “While we expected some behavioral adjustment to the lights at night, we didn’t anticipate that it would be this impactful,” says Neil Gilbert, an ecologist at Oklahoma State University in Stillwater. 

>Past research has repeatedly shown that the light from human habitation and infrastructure has [substantial effects on wildlife](https://www.sciencenews.org/article/streetlights-especially-super-bright-leds-may-harm-insect-populations). Birds that migrate at night can become disoriented by the lights and fatally crash into buildings. Lights can also perturb the light-dark cues that regulate hormonal and behavioral rhythms. Some studies on small numbers of bird species have shown they’re active earlier in the day in light-polluted areas.

[Read more here](https://www.sciencenews.org/article/birds-sing-longer-light-pollution) and the [research article here](https://www.science.org/doi/10.1126/science.adv9472).