Almost every day in October for the past 33 years, Richard Kingsford has climbed into the passenger seat of a single-engine Cessna to count the waterbirds of eastern Australia. The aircraft buzzes the wetlands from 50 metres above the ground while Kingsford, the director of the Centre for Ecosystem Science at the University of New South Wales, barks into a recorder the numbers and species of startled ducks and other waterfowl – herons, ibis, spoonbills, cormorants and magpie geese.
It’s one of the largest and longest-running fauna surveys in the world, with Kingsford racking up 100 hours of flying time over 2000 wetlands across Queensland, NSW, Victoria and South Australia. Each of the 10 transects are 30 kilometres wide. The northernmost, Band 10, runs from the Whitsunday Islands all the way to the Queensland–Northern Territory border. Band one extends from Seaspray, in Victoria’s far east, to Warrnambool.
The reason for covering such a huge area, Kingsford says, is because “nobody owns the ducks”. In a land of droughts and flooding rains, waterbirds fly enormous distances in rapid response to the prevailing conditions: the ducks of Victoria are as likely to turn up in the Lake Eyre Basin or north Queensland. In dry years, most of the birds are sucked southwards, into the perennial Victorian swamps that provide refuge as the lakes and lagoons of northern and central Australia evaporate.… Read more..