A turning point in Hosking's career came through an accident which happened on 12 May 1937. Returning to a tawny owl photographic hide late at night, he was struck in the face by the owl, its claw penetrating his left eye. The resulting infection meant choosing between losing one eye or probably going blind. The eye was removed and the ensuing publicity appeared in all the national newspapers, where his photographs were already in great demand. As soon as he was fit he returned to the hide to continue taking pictures.