With all those big spruces, I remember the owls being hard to spot. That said, I could “see” them in other ways in winter - small mammal tracks in fresh snow, ending in a disturbance, with the imprint of owl wings descending and beating to ascend quickly again. Likewise with lynx tracks in the snow. Follow them far enough, and they often intersect a hare track that ends abruptly in a bit of blood and fur. That place is magic, and your excellent photograph captures it well.