(I) In many parts of Asia, cranes are held sacred as symbols of happiness, good luck, long life and peace. (II) Although these birds are held in such esteem, they are also being destroyed. (III) In fact, cranes are among the most endangered families of birds. (IV) As many as nine of the planet's 15 crane species are threatened with extinction because of habitat loss. (V) The image of cranes can be seen in prehistoric art, on Egyptian tombs, and on the totems of Native Americans.