I came into the garden on Tuesday morning before Christmas and heard a bunch of crows "cawing" loudly behind the greenhouse. Continuing the morning duties of unlocking doors and opening gates the sound of the crows was replaced by "shack, shack, shack", a flock of Steller's jays in the same location. As I wandered out back to see what the ruckus was, little woodland birds frantically flew left and right. Raven sounds ,"crunk, crunk" replaced the jays. High on a branch, through the fog, back lit by morning light, I could make out the silhouette of a great horned owl and two ravens attacking from either side. One raven would peck high and other low. Then the owl let out a strange sound that resembled simultaneously a hiss and a growl. It raised its enormous wings and then flew silently away.