Adam Henson presents a special edition of Countryfile looking at rare breed farm animals. Starting with his own old spot pigs, he tells the story of some of our rarest farm animals and the threats they face. It is an interest that Adam got from his father Joe, who was one of the founders of the Rare Breeds Survival Trust. There's a chance to see the two of them returning to the place where it all started, on the Orkney Islands, before Joe advises Adam on a potential addition to the farm, some longhorn cattle. Adam's also joined by his daughter Ella to help train his exmoor ponies. Plus there's a look back on some of the times we have featured rare breeds on Countryfile in the past. Ellie Harrison learns to plough with a rare shire horse, Matt Baker follows tamworth pigs from farm to fork and Adams discovers how the latest technology can help guarantee the future of our rare breeds.