Reconstructing a dinosaur skeleton for a museum is a balance between art and science - but getting that balance right is a tricky diplomatic, as well as scientific, process. Presenter and anatomist Dr. Alice Roberts follows the reconstruction of L.A.'s Natural History Museum's 2011 dinosaur exhibit.
Aerial predators like owls, falcons, and eagles have keen senses that allow them to see and hear things that would normally go unnoticed by other species. Fly alongside these magnificent raptors at the Canadian Raptor Conservancy in Ontario as they showcase the full range of their hunting abilities.
Intelligence and adaptability allow primates to tackle the many challenges of life, and this is what makes our closest relatives so successful. This resourcefulness has enabled primates to conquer an incredible diversity of habitat. Hamadryas baboons live on the open plains of Ethiopia in groups up to 400 strong. Strength in numbers gives them some protection from potential predators. But, should their path cross with other baboon troops, it can lead to all-out battle, as males try to steal females from one another, and even settle old scores. Japanese macaques are the most northerly-dwelling primates and they experience completely different challenges. Some beat the freezing conditions by having access to a thermal spa in the middle of winter. But this privilege is only for those born of the right female bloodline. For western lowland gorillas, it's the male silverback that leads his family group in the rich forests of the Congo basin. He advertises his status to all with a powerful chest-beating display. Most primates are forest dwellers, and one of the strangest is the tarsier – the only purely carnivorous primate. As it hunts for insects the tarsier leaps from tree to tree in the dead of night, using its huge forward-facing eyes to safely judge each jump. Good communication is essential for success in primate society.
Young animals prepare for their first winter away from their parents, humpback whales return to Alaska's rich feeding grounds and salmon return to spawn in the rivers where they were hatched. But the returning salmon have to negotiate a path past hungry brown bears fattening themselves before they hibernate.
This episode follows the animals of Argentina, living life at the mercy of the Andean mountains. These peaks dictate a hard existence for every living creature from their summits to the very edge of the Patagonian steppe, forcing even the cutest resident to turn carnivore.