... of the woods and the mystery of the rivers, to the dark-eyed hawks and the yellow-eyed, to hawks of the lure and hawks of the fist. The Bishop was as steeped in the lore of falconry as the King, and the others smiled as the two wrangled hard over disputed and technical questions: if an eyas trained in the mews can ever emulate the passage hawk taken wild, or how long the young hawks should be placed at hack, and how long weathered before they ... — Sir Nigel • Arthur Conan Doyle