Chris Skinner is giddy to show Matthew Gudgin a new species that's causing quite a buzz at High Ash Farm.The pair then survey the hallmark left behind from a special visitor who wandered through the farm last night. Chris explains how ivy is a plant for all seasons. Sometimes an undesirable plant for some but Chris describes how valuable it is for butterflies and birds all the year round.Listener questions cover goldfinches, territory marking of birds, moth identification and photos fro...