In a Manitoba forest, a great grey owl sits atop a spindly branch. Then, wings outstretched, it descends from its perch, gliding over the blanket of snow. Sp...

The owl’s large facial ruff, formed of dense feathers, helps amplify sound and funnel it towards his ears. Through half a meter of snow, the sound of scampering feet is inaudible to us. But not to him. With the help of a special acoustic camera equipped with 60 highly sensitive microphones, we can see what the owl is hearing.