[00:00.0]The cliff tops are soon stained pink
[00:03.70]with the droppings of tens of thousands of nesting penguins
[00:08.62]Only in a land almost entirely covered in ice
[00:13.4]could bare rock be reckoned an oasis
[00:18.6]Some will travel into the heart of the continent to find it
[00:23.78]These are nunataks
[00:27.64]the exposed peaks of vast mountain ranges
[00:31.14]buried in ice over a mile deep
[00:36.26]The eerie silence here is only broken in spring
[00:41.87]The snow petrels have arrived and are courting
[00:46.97]Antarctic petrels now join
[00:48.49]the most southerly bird colony on earth
[00:54.14]The birds have flown inland for over 300 miles
[00:57.86]to reach this breeding site
[01:00.26]Once their eggs have hatched
[01:02.10]they'll be forced repeatedly to make the 600-mile round trip
[01:06.48]to gather food in the ocean