The sound of a bird chirping is nature’s alarm clock. It somehow creates a sense of peace as you open your eyes to get your day started. But one thing you might never recall is hearing birds at night.

Night owl, early bird — humans have associated different types of birds with different times of day since the dawn of time. And while some birds are more known for getting up with the sun, there are ...

Ornithologists say the chirping of birds at daybreak is part of their mating ritual. They tell me that increasing daylight, especially in the spring and early summer, triggers the mating instinct in ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. CHICAGO — If you’ve ever been up before the ...

The chirping or singing of birds isn't just a pleasant sound; it has much spiritual significance across cultures and throughout history. Birds usually sing to defend their territory or attract mates, ...