Scotland's ospreys are on their epic autumn migration to West Africa. A team of conservationists headed up by biologist Sacha Dench is following them all the way, aiming to discover much more about the journey that the ospreys make and the challenges they face along the way. Climate change is making weather patterns less predictable, crucial wetlands on their route are being poisoned by pesticides and depleted by drought and the birds have the unfortunate habit of electrocuting themselves when they land on powerlines with freshly caught fish.

Today, the Conservation Without Borders team follow the birds through the Gambia where local birdwatchers are fighting to save prime bird habitat from tourism development.

Producers: Emily Knight and Alasdair Cross Show less