The Yorkshire Naturalists' Union is devoted to studying and recording Yorkshire's flora and fauna. We are an association of amateur and professional naturalists covering a wide range of aspects of natural history. We are one of the country's oldest wildlife organisations, having celebrated our 150th anniversary in 2011.

Our thanks to all the photographers who have contributed their wonderful images. Where possible, we have acknowleged them individually, but we would like to thank: Bob Thompson, Barry Warrington, Jim Horsfall, Jo Prowse, Paul Bateson, Paul Holmes, Robert Jaques, Ken Diggle. Paula Lightfoot, Mick Talbot, Petros Pete, Jenny Wheldon, Gregory Smith, John Sadlerm Mervin Nethercoat, Steve Race, Roger Key, John Bowers, Vaughan G, Sharon Flint et al