He was certainly a lovely thing—a proud little person of black and enamel-blue, with a blue cap and a deep-blue tail nearly as long as his whole body.  He was very busy, strutting happily about the ground or fluttering from twig to twig with a rapid flight that made him look like a glancing jewel.  Finally he perched on a bough and broke into a little song as exquisite as himself: and then dashed off in a great hurry to find his mate.