But among all these singers, Walter von der Vogelweide (of the Birds' nests or the aviary) may be singled out as their highest type. He was the darling of his own times, and is constantly referred to by other poets as "their master in the lovely art of words and tones," "the sweetest of all nightingales," &c. It is not known what part of Germany was his birthplace, but he travelled all over it in the course of his life; he was a welcome guest at its courts, especially those of Thuringia and Austria, and he was a crusader. His poems give us the picture of a life such as we can well understand in these days, however different the circumstances may be, -- a life full of travel, and of interest in questions of politics and religion, and even of literature. For the frequent reference to each other's works by these Minne-singers, with criticism or with praise, shows that those days too had their literary world. A large number of his poems are like those of the other Minne-singers, filled with praises of his lady, and of the May-time, -- graceful, tender, often quaint and naive lyrics. So one begins: --