Within the Tree of Life.
With their asymmetrical ear openings, Saw-whet Owls (Aegolius acadicus) are among the most attentive of listeners. At a dinner party, for instance, they might hear even the most hushed of rumor-mongering from the corner of the room, and be able to share with you precisely what was said and by whom. In reality, they use this heightened sense of hearing while perched in an opportune branch in the night. With their disc-shaped faces angled downward, they listen for the rustling movement of mice and voles beneath the leaf-litter. So precise is their hearing, that they can accurately strike a prey item without ever seeing it.