Last month saw a first in the UK: Bison were released into a woodland in Kent. An animal of this size and nature hasn't be known to be on UK soil for milennia, but now conservationists hope they can act as ecosystem engineers and help protect our woodlands. We explore how the European bison is able to exert such dramatic effects on its environment as well as dive into past reintroduction sucess stories, including the flight of the red kite and the nesting of the dormouse. Plus, we address the potential costs off adding a species into a new space, how learning to live alongside predators may... Like this podcast? Please help us by supporting the Naked Scientists