United States or Greenland ? Vote for the TOP Country of the Week !
These might be called the organs of courtship, such as the peacock's tail, the plumes of the birds-of-paradise, and the brilliant plumage of humming birds and many others. The song of birds is another example, and sound is produced in many Fishes for a similar purpose. In the South American species, Rhinoderma darwinii, the enlarged vocal sacs are used for this purpose.
Word Of The Day