Although I travel the world to study endangered species in their natural habitats, I also love to celebrate the wildlife of my native British Isles, including this magnificent red stag. The Red Deer is Britain's largest land mammal. Red Deer originally lived on the woodland edge, but the large scale reduction in tree cover in Britain over the centuries has forced them to adapt to life on the open hill. A herd of Red Deer live in the national park bordering my home in Derbyshire, occasionally straying into my garden.