Great Gray Owl 008
Great Gray Owl 007
Great Gray Owl 006

A Great Gray can hear a mouse running under a foot and a half of snow half a football field away. When you think about it, it is amazing.
Great Gray Owl 005

Like I mentioned last week, it is the facial feathers that transmit the sounds back to the ears. One ear is higher than the other giving the owl the ability to use triangulation to locate the sound of a running mouse under the snow.  The feathers act like a satellite disc giving the owl the ability to hear sounds that we couldn’t even think of hearing.
See photo in original gallery.