The predecessor to Helen Macdonald’s , T. H. White’s nature writing classic, , asks the age-old question: what is it that binds human beings to other animals? White, the author of and was a young writer who found himself rifling through old handbooks of falconry. A particular sentence—“the bird reverted to a feral state”—seized his imagination and he immediately wrote to Germany to acquire a young goshawk. Gos, as White named the bird, was ferocious and free, and White had no idea how to break him in beyond the ancient of depriving him of sleep. Slowly man and bird entered a state of delirium and intoxication, of attraction and repulsion that looks very much like love. White kept a daybook describing his volatile relationship with Gos—at once a tale of obsession, a comedy of errors, and a hymn to the hawk. It was this that became , one of modern literature’s most memorable and surprising encounters with the wilderness—as it exists both within us and without.