To the ancient Greeks, the owl symbolized wisdom, but the Romans saw it as an evil omen. Their myths tell of an owl-like strix that stalked the night and preyed on human flesh. Ovid’s poem Fasti describes how such a demon slipped into the nursery of the sleeping prince Proca and was found hunched over the cradle, sucking the newborn’s blood. This supernatural owl changed over time. In Italian, strix became strega , meaning witch; in Romanian, strigoi is a vampire; and, in Macbeth , Shakespeare once more recast the owl as ‘the fatal bellman’ whose shriek summons King Duncan’s death. Like its legendary counterparts, the great gray owl, Strix nebulosa , inhabits the shadows. It lives in the icy north, in the dense, dark conifer forests of Russia, Alaska, and Canada. By night, it hunts. Scythe-like talons and hooked, knife-sharp beak make the great gray owl a fearsome predator. By day, it stays hidden. Although one of the largest of its kind, its dusky and mottled plumage blends wit...