Need to Breed

7th November 2010 45 mins Season 1 Episode 2

Every day, migrating creatures around the world wage incredible journeys; risking it all in pursuit of the one thing more precious than themselves: the creation and caretaking of their precious young - the next generation of global wanderers. From the rocky beaches of the Falkland Islands to the dense forests of Costa Rica and Australia to the desolate savannah of southern Sudan, countless animals now venture forth on timeless journeys, bent on their own survival -- and the survival of their species.

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Season 1 · Episode 3

Science of Great Migrations

Borne of suffering, desperation, and starvation, every migration is a death-defying journey, filled with countless obstacles. Science of Great Migrations will go behind breathtaking images of migration and show how scientists learn from and study these magnificent spectacles of nature. The iconic migration of wildebeest in the Serengeti; the 1,800 mile flight path of the monarch butterfly; the two-month pilgrimage of the southern elephant seal off Patagonia; and the perilous journey of African elephants in Mali together give scientists a look into this dangerous world of migration. Advances in scientific technology and data collection are revealing a new understanding of animal decision-making, swarm dynamics and the inner workings of a herd, flock or pod.

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