Steven David Miller / Whistling kites (Haliastur sphenurus) two in flight, one with prey in talons, over Corroboree Billabong, Mary River, Northern Territory, Australia

Steven David Miller / Australasian darter (Anhinga novaehollandiae) female drying wings after fishing in Corroboree Billabong, Mary River, Northern Territory.

Steven David Miller / Comb-crested jacana (Irediparra gallinacea) male and four eggs. The male incubates the eggs. Corroboree Billabong, Mary River, Northern Territory, Australia.

Steven David Miller / Black-necked stork (Ephippiorhynchus asiaticus) female foraging for fish on bank Corroboree Billabong, Mary River, Northern Territory, Australia.

Steven David Miller / Black-necked stork (Ephippiorhynchus asiaticus) male standing in wetland. Corroboree Billabong, Mary River, Northern Territory, Australia.

Steven David Miller / Mary River Houseboats on Mary River's Corroboree Billabong, Northern Territory, Australia, July 2010

Steven David Miller / Brolga cranes (Grus rubicunda) adult and juvenile fishing in wetland, Corroboree Billabong, Mary River, Northern Territory, Australia

Steven David Miller / Brolga crane (Grus rubicunda) fishing in wetland, Corroboree Billabong, Mary River, Northern Territory, Australia

Steven David Miller / Brolga cranes (Grus rubicunda) adults and juvenile fishing in wetland, Corroboree Billabong, Mary River, 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 / 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.