Dr Mark Avery is a senior UK conservationist with nearly four decades' experience of giving wildlife a better future. The author of numerous previous books, including Inglorious: Conflict in the Uplands (2015), Mark worked for the RSPB for 25 years before going freelance in 2011. He co-founded the campaigning organisation Wild Justice (with Chris Packham and Ruth Tingay) and was recently chair of the World Land Trust. He lives in rural Northamptonshire where he tries to grow tomatoes and to add bird species to his garden list - both with limited success. Twitter @markavery