What did the fox tell the crow about its voice and appearance?

The Fox says to the crow, "How glossy your feathers; how bright your eye. I feel sure your voice must surpass that of other birds, just as your figure does; let me hear but one song from you that I may greet you as the Queen of Birds."

Source: http://www.eastoftheweb.com/short-stories/UBooks/FoxCrow.shtml