T.H. White 
The Goshawk [EPUB ebook] 

T. H. White found himself rifling through old handbooks of falconry. A particular sentence—“the bird reverted to a feral state”—seized his imagination, and, White later wrote, “A longing came to my mind that I should be able to do this myself. …” White wrote to Germany to acquire a young goshawk. Gos, as White named the bird, was ferocious and Gos was free, and White had no idea how to break him in beyond the ancient practice of depriving him of sleep, which meant that he, White, also went without rest. 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.