Sonar, originally SONAR, an acronym for SOund Navigation And Ranging, allows animals (or man-made devices like submarines) to ...

I approach a flock of mountain chickadees feasting on pine nuts. A cacophony of sounds, coming from the many different bird species that rely on the Sierra Nevada's diverse pine cone crop, fill the ...

Phoebes and Empidonax flycatchers typically sit on an exposed perch looking for small flying insects. When they see one, the bird will burst off into the air, snag the bug, and return to a perch to ...