Focusing on the natural history of the British Isles, Mr. Eatherley takes up the search for the stories behind some of the “endless succession of animals, plants, fungi and other alien lifeforms” that have taken to calling the Isles home over the past centuries, and indeed, facing up to the reality that it’s now “often hard to work out what actually is native, and what is foreign.” (There’s a larger metaphor in there somewhere…)