nightingale

"Once when St. Francis was about to eat with Brother Leo, he was greatly delighted to hear a nightingale singing. So he suggested to his companion that they also should sing praise to God alternately with the bird. While Leo was pleading that he was no singer, Francis lifted up his voice and, phrase by phrase, sang his duet with the nightingale. Thus they continued from verpers to lauds, until the saint had to admit himself beaten by the bird, Thereupon the nightingale flew on to his hand, where he praised it to the skies and fed it. Then he gave it his blessing and it flew away."  ~John R. H. Moorman