Etienne Littlefair / Short-beaked echidna (Tachyglossus aculeatus) exploring the base of a deep sandstone gorge at night, Adelaide River Hills, Northern Territory, Australia.

Etienne Littlefair / Forest kingfisher (Todiramphus macleayii) perched on a charred branch in savannah woodland, Adelaide River Hills, Northern Territory, Australia.

Etienne Littlefair / Two South polar skuas (Stercorarius maccormicki) flying over broken pack ice, Ross Sea, Antarctica.

Etienne Littlefair / Black-necked storks (Ephippiorhynchus asiaticus) wading in shallow water, adult male in foreground, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / White-bellied sea eagle (Haliaeetus leucogaster) perched on branch at sunrise, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Whiskered tern (Chlidonias hybrida) flock in flight, fishing above a drying floodplain, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Saltwater crocodile (Crocodylus porosus) submerged in water in wetland floodplains, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Black-necked storks (Ephippiorhynchus asiaticus) wading in shallow water, adult male in foreground, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Black-necked stork (Ephippiorhynchus asiaticus) female, landing, Corroboree billbong, Northern Territory, Australia.

Etienne Littlefair / RF - Black-necked stork (Ephippiorhynchus asiaticus) female, standing in shallow water feeding on an Eel-tail catfish (Neosilurus ater), Corroboree billbong, Northern Territory, Australia. (This image...

Etienne Littlefair / Eel-tail catfish (Neosilurus ater) resting on creek bed, Lawn Hill Creek, Queensland, Australia.

Etienne Littlefair / Chocolate argus butterfly (Junonia hedonia) basking in morning sun, Adelaide River Hills, Northern Territory, Australia.