آنها سوپرانوهای جنگل هستند، پس چه چیزی صدای کر صبحگاهی گیبون ها را خاموش می کند؟

They’re the sopranos of the forest, so what’s silencing the gibbons’ morning chorus?

As human development and roads increasingly fragment their habitats, a study suggests traffic noise could be altering the animals’ wake-up call Dawn has broken, and the air is cool and still. It’s at about this time that gibbons usually erupt into song, wa-oo-ing and wa-ing from the highest branches and filling the tree tops with rich melodies. But in this corner of Malaysian forest, bordered by housing and roads,…