Every spring and fall, something extraordinary happens in the sky. Without most people ever noticing, billions of birds take flight under cover of darkness. These nocturnal travelers are mostly small ...

Birds that sing at night: Most birds stop singing when the sun goes down, but for some, the concert is just starting. Hearing birds sing at night is an interesting and growing experience. We usually ...

Using thermal imaging and digital photography, researchers can now spot and identify birds that migrate silently through the night sky—a method that could reveal new insights into nocturnal migration ...