Etienne Littlefair / Black-necked storks (Ephippiorhynchus asiaticus) wading in shallow water, adult male in foreground, 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 / 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 / Saltwater crocodile (Crocodylus porosus) in shallow water feeding on a Northern long-necked turtle (Chelodina rugosa), Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Saltwater crocodile (Crocodylus porosus) juvenile, basking on mud flats off Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Group of Saltwater crocodiles (Crocodylus porosus) congregating in shallow water in the dry season, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Comb-crested jacana (Irediparra gallinacea) taking flight from water, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / RF - Comb-crested jacana (Irediparra gallinacea) feeding amongst Lilypads, Corroboree billabong, Northern Territory, Australia. (This image may be licensed either as rights managed or royalty free.)

Etienne Littlefair / Saltwater crocodile (Crocodylus porosus) in water, head portrait, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Comb-crested jacana (Irediparra gallinacea) walking on Lilypads, Corroboree billabong, Northern Territory, Australia.

Etienne Littlefair / Two Black-necked stork (Ephippiorhynchus asiaticus) males feeding in shallow water, Corroboree billbong, Northern Territory, Australia.

Etienne Littlefair / Swamplands lashtail (Tropicagama temporalis) resting on Lilypad, Corroboree Billabong, Northern Territory, Australia.

Etienne Littlefair / Black-necked stork (Ephippiorhynchus asiaticus) male chasing after a fish in shallow water, with Saltwater crocodile (Crocodylus porosus) in water behind, Corroboree billbong, Northern Territory, Aust...

Roland Seitre / Western galah (Eolophus roseicapilla roseicapilla) standing at water's edge, Wannoo, Billabong Roadhouse, Western Australia.

Roland Seitre / Galah (Eolophus roseicapilla) perched on tree stump at water's edge, spreading its wings, Dajarra, Queensland, Australia.

Roland Seitre / Group of Galahs (Eolophus roseicapilla) drinking at water's edge, Wannoo, Billabong Roadhouse, Western Australia.

Roland Seitre / Two Galahs (Eolophus roseicapilla) perched on tree stump at water's edge, one spreading its wings, Dajarra, Queensland, Australia.

Tim Laman / Comb-crested jacana (Irediparra gallinacea) feeding among Giant water lilies (Nymphaea gigantea) in billabong, Lotusbird Lodge, Cape York Peninsula, Queensland Australia.

Tim Laman / Pair of Sarus cranes (Grus antigone) feeding at edge of billabong surrounded by Paperbark (Melaleuca quinquenervia) trees, Piccaninny Plains Sanctuary, Cape York Peninsula, Queensland, Australia.

Bruce Thomson / Zoom out to reveal Estuarine / Saltwater crocodile (Crocodylus porosus) swimming in a large freshwater billabong, Australia.

Bruce Thomson / Estuarine / Saltwater crocodile (Crocodylus porosus) swimming towards another crocodile, it displays aggressive territorial behaviour causing its rival to swim away in a large freshwater billabong, Au...

Bruce Thomson / Saltwater / Estuarine crocodile (Crocodylus porosus) partially submerged under tree near waters edge in large freshwater billabong, Australia.

Etienne Littlefair / Plumed whistling-ducks (Dendrocygna eytoni), feeding at the edge of a billabong, Marrakai, Northern Territory, Australia, October.

Tim Laman / Sarus Crane (Grus antigone) feeding at edge of Paperbark lined billabong, Piccaninny Plains Sanctuary, Cape York Peninsula, Queensland, Australia. September.

Tim Laman / Sarus Crane (Grus antigone) in flight at edge of Paperbark lined billabong. Piccaninny Plains Sanctuary, Cape York Peninsula, Queensland, Australia. September.

Tim Laman / Sarus crane (Grus antigone) feeding at edge of Paperbark lined billabong. Piccaninny Plains Sanctuary, Cape York Peninsula, Queensland, Australia. September.

Tim Laman / Sarus crane (Grus antigone) feeding at edge of Paperbark lined billabong. Piccaninny Plains Sanctuary, Cape York Peninsula, Queensland, Australia September.

Tim Laman / Sarus crane (Grus antigone) feeding at edge of Paperbark lined billabong. Piccaninny Plains Sanctuary, Cape York Peninsula, Queensland, Australia. September.

Tim Laman / Sarus crane (Grus antigone) feeding at edge of Paperbark lined billabong. Piccaninny Plains Sanctuary, Cape York Peninsula, Queensland, Australia. September.

Tim Laman / Australian pelican (Pelecanus conspicillatus) Lotusbird Billabong, Cape York Peninsula, Queensland, Australia

Tim Laman / Magpie Goose (Anseranas semipalmata) at sunrise Lotusbird Billabong, Cape York Peninsula Queensland, Australia

Tim Laman / Magpie Goose (Anseranas semipalmata) at sunrise Lotusbird Billabong, Cape York Peninsula Queensland, Australia

Tim Laman / Comb-crested Jacana (Irediparra gallinacea) landing among Giant Water Lilies (Nymphaea gigantea) in billabong (pond) Cape York Peninsula, Queensland, Australia.

Tim Laman / Aerial view of Billabong in Piccaninny Plains Sanctuary Cape York Peninsula,Queensland, Australia

Tim Laman / Magpie Goose (Anseranas semipalmata) roosting in trees, with Wandering Whistling-Duck (Dendrocygna arcuata) flock in Lotusbird Billabong. Cape York Peninsula, Queensland, Australia. August 2012

Tim Laman / Black-necked Stork (Ephippiorhynchus asiaticus) foraging, Lotusbird Billabong, Cape York Peninsula Queensland, Australia

Tim Laman / Black-necked Stork (Ephippiorhynchus asiaticus) Lotusbird Billabong, Cape York Peninsula Queensland, Australia

Tim Laman / Black-winged Stilt (Himantopus himantopus) Lotusbird Billabong, Cape York Peninsula Queensland, Australia