Sean is in Essex meeting a farmer who has taken diversification to the next level. David Eagle has let the sea inundate acres of his farmland to create vital saltmarsh habitat for migratory birds, and already thousands of brent geese are making the most of his hospitality. David is also on trend with his sea buckthorn juice, made from the berries of hundreds of sea buckthorn shrubs he has planted. But Sean finds out that they are not so easy to harvest.Sean then dons his running shoes to take part in a farm run – a form of diversification designed to help those with stress. We also look back through the Countryfile archives at other farm diversification stories featured on the programme.