#src documentary

This baby sperm whale plays with a mangrove seed practicing his coordination. He produces pulses of high frequency sound from his large head; sonar that will eventually enable him to locate prey in the black depths. Zeroing in on a tiny seed is great practice. When you're as big as this, grabbing something the size of a pencil is not easy.

These islands are home to wild horses. They live a perilous life, braving tides and strong currents. Legend has it their ancestors were marooned here when the ships of conquistadors were wrecked on these shores.

Fox Cubs 🦊 A Year on Planet Earth: Spring

Winter storms have covered this Red Fox's home in a blanket of snow over a metre deep. It's hidden the rodents he usually hunts. For some animals, this might be a barrier too great to overcome, but a fox is cunning and has excellent hearing. It's trial and error.

It's breeding season and this 15yo stallion (darker coat) must rise to the challenge presented by his younger rival. Like prize-fighters they size each other up, stamping and posturing. The intruder is younger and bigger, but the wily old stallion has years of combat experience. A stamp of his foot says "bring it on".

This bird turns our trash into treasure as long as it's a blue colour. The male builds a bower - full of sticks and leaves - and decorates it with any blue items he's found. He creates an artistic bower that doubles as a stage to woo a female. It's one of the most elaborate decorated structures designed in the animal kingdom.

Fennec Fox (Vulpes zerda) 🦊 Natural World S36E04

Camargue horses are native to the marshland region. They live like wild horses, but they are domesticated. For the past 500 years they've been used to wrangle herds of prize-winning bulls by the 'Gardians', Europe's only surviving cowboys.