Great Horned Owl
Fledgling Great Horned Owls learn very quickly the power of an angry glance. Above, we see a sweet youngster relaxing in the woods. He is blissfully unaware of my presence and his cherubic face reflects it.
Below, he switches to his menacing look as soon as he notices me. The drastic change is alarming, impressive, and amazing.
Waking up when you should be sleeping is never fun. This Great Horned Owl calls to its partner who responds through the cacophony of mobbing crows. Eventually the corvids gave up and silence returned to the trees. The two owls ended up perched side by side in an unphotographable spot and stopped hooting.