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.

A cheerful chirping is part of everyday life with pet birds–but what if the familiar sounds suddenly become a persistent, ...

I was recently creeping through a clearing of downed trees in a wooded Brooklyn park with my iPhone in hand. Birds were singing everywhere, but through the din, I was recording a peculiar song: It was ...

Ever wonder why cats love to chatter at birds, especially when they spot them from behind a window in your home? There are several reasons for this instinctive cat behavior, with the urge to kill ...

Birds do it and so do doughnut-shaped fusion facilities called "tokamaks." But tokamak chirping-- a rapidly changing frequency wave that can be far above what the human ear can detect -- is hardly ...