There is a charming tradition observed by the Adélie penguins. Once a year, during the...

[first lines] Narrator:
There is a charming tradition observed by the Adélie penguins. Once a year, during the mating season, all the male birds gather on the Antarctic beaches, and there, each selects an extraordinary pebble. With pebble in hand, each male presents his precious gift to the lady he most desires. If she accepts it, they mate for life