The book , " Natural History " , was written by which author ?
He has been making films for more than 30 years , but Crawford is perhaps best known for his natural history documentary films and TV series in the United Kingdom and United States including , in 1990 , the first television series to attempt to comprehensively document North America 's wildlife , " Land of the Eagle " ( WNET New York ) and in 1999 ; " Living Britain " ( BBC 2 ) , a series of ten 30 minute films which portrayed the natural history of Great Britain and Ireland .