Matt Baker and Julia Bradbury visit the New Forest. Matt finds out how the local ponies are keeping an invasive pond weed in check, and Julia gets to grips with some big machinery to help clear the land for a special conservation project. Ellie Harrison is also in the New Forest, getting out of breath as she discovers the delights of adventure racing. John Craven is in Scotland, where deer-stalking is a vital part of the Highland's economy. He investigates why huge numbers of them are being culled to make way for trees. Adam Henson keeps lots of rare breed chickens on his farm in the Cotswolds, but this week he looks to add some unusual egg-laying hens to his collection.