Biology

After avian influenza killed 21 endangered California Condors, government officials are testing a vaccine that could protect the massive scavengers from infection

An expedition has discovered a remote Fijian cave with thousands of microbats thought to be nearly extinct

Light is a very dangerous, if not so obvious, threat to birds who migrate at night. But researchers are using weather radar to track birds and provide “lights out” forecasts to help keep their paths clear of visual distraction.

Science is turning to machines to unlock the secrets of the vast, mysterious pulse-of-the-planet phenomenon that is nocturnal migration.

Thousands of usually solitary octopuses gather to brood eggs in a special spot off California

If you really want to challenging your bird identification skills, try using them at night, when bird calls are less than 100 milliseconds long.

A hogfish may provide the first example of a vertebrate with specialized light-detecting cells that reside outside the central nervous system

A chemical trick for making oxygen can sustain whole underground ecosystems

The “button dogs” of TikTok seem to be learning human words. What’s really going on?

For thousands of years, no one truly knew how birds migrated—that is, until a few unlikely pioneers sat in an empty field with hundreds of pounds of kludged together recording gear and waited to hear sounds that no one had ever captured.

From the moment a male lion is born, it faces a gauntlet of challenges, ranging from snakebite to infanticide

On any given night, dense clouds of dark, ghostly figures pass over your head as you sleep. Maybe you never knew they were there, but there are people out there who are deciphering all the unseen movement that happens amid the darkness.