On her way home from work on a recent wintry night, Kathy Keane ran into a group of people quietly watching a pair of great horned owls perched on a tree in Lincoln Park. “I started hearing the ‘hoot, hoot,’ and then the other would call back ‘hoot, hoot,’” she told the Tribune. “And it was just so beautiful.” Excited about the sighting, she made sure to walk by the same spot the next day with her husband, Patrick Keane. The bird was still on the tree, but then a drone flew toward the owl and sc