Springwatch Unsprung

Which birds have the most air miles? Are adders born venomous? Springwatch Unsprung brings together all the most-asked questions from the surprise hit BBC 2 TV spin-off of the same name. The heart of the book is what has become the star of the TV programme – the viewers' anecdotes and questions. Many seemingly simple questions turn out to have complex answers, and some that seem difficult have a very simple explanation. All wildlife questions – be they trivial, idiosyncratic, baffling or strange