Nick Garbutt / Wallace's gliding frog (Rhacophorus nigropalmatus) in mid-glide. Danum Valley, Sabah, Borneo

Tim MacMillan / John Downer Pr / Multiple exposure study of various frogs gliding. Those with more webbing between their toes glide further (Resolution restriction - image digitised from film, 'Weird Nature' tv series)

Philippe Clement / Northern gannet (Morus bassanus) in flight soaring over the ocean along the Scottish coast, Scotland, UK, May

Philippe Clement / Northern gannet (Morus bassanus) in flight soaring along sea cliff at seabird breeding colony, Hermaness, Unst, Shetland Islands, Scotland, UK, May

Philippe Clement / White stork (Ciconia ciconia) in flight thermal soaring with spread wings against blue sky, France.

Philippe Clement / Griffon vulture / Eurasian griffon (Gyps fulvus) in flight, soaring against blue sky, Provence, France, September