Anna's hummingbird flying in the experimental setup, drinking sugar water from a fake flower. Credit: Lentink Lab / Stanford University. Anna's hummingbird flying in the experimental setup, drinking ...

Claudio Mello was conducting research in Brazil’s Atlantic Forest about 20 years ago when he heard a curious sound. It was high-pitched and reedy, like a pin scratching metal. A cricket? A tree frog?

The mountains, lakes, deep woods and rugged coastlines of Maine's Acadia National Park are home to more than 300 species of birds. Volunteers are now making recordings to document the avian soundscape ...

I’m not a bird watcher, but I’ve become a bird listener ever since downloading a bionic ear app to my phone. It lets me enter a different world, one where I’m surrounded not just by chirping but by ...