By Collar, Nigel J, Long, Adrian J, Rojo, Jamie, Gil, Patricio Robles, Bateman, Robert
By Michel, Claude
By Neil Nightingale, Nightingale, Neil et al
By Esther Woolfson
By Armstrong, Edward Allworthy
By Sparks, John
By Mcgrath, Rory
By Franklyn Penning, John Paige, HRH The Prince of Wales, David Attenborough
By Mike Mockler, Mockler, Mike
By Bolagna, Giafranco
By John Blashford-Snell, Rula Lenska
By Burgat, Florence, Breda, Lidia
By Tait, Malcolm
By Burger Cillie, Ulrich Oberprieler
By Dennis, Roy
By Darlington, Miriam
By Heinzel, HERMANN, Fitter, R. S. R., Parslow, John
By Perlo, Ber van
By Natural History Museum
By Peterson, Roger Tory, Mountfort, Guy, Hollom, P. A. D.
By Hume, Rob, Hayman, Peter
By Couzens, Dominic, Partington, Peter
By Flegg, Jim
By Raine, Andre
By Everett, Mike
By Marzluff, John M.
By James Aldred