Nature - Series 2 - Alien Attitudes

Brett Westwood asks leading conservationists whether we are being consistent in our approach to non-native plants and animals. We cull ruddy ducks and uproot Himalayan balsam, but we also enjoy watching little owls and hares in the countryside. None of these species is native to the United Kingdom, but the way in which we think of and deal with them can appear contrary and illogical. Brett asks which species should we nip in the bud, and which we should learn to live with.