這是第六階段對澳洲鳥類的報告，並呈現最新的鳥類族群健康綜合狀況，以及提出面臨的永續性問題。這項 2008 年的報告專注在鳥類族群數量的變化，則是來自 50 個已進展 40 年的長期監督計畫結果。
這個報告呈現出鳥類族群變化趨勢不一致。與 2003 年報告相比，如今更多物種還在持續減少。當初很常見的鳥類現在再也不常見了，像澳洲原本十分常見的黑背鍾鵲(Gymnorhina tibicen)，今數量銳減。 尤其在莫瑞達令盆地(Murray-Darling basin)上， 受到乾旱以及水經營措施不足而乾涸，水鳥族群數量亦銳減。 (相關資料點此參考。)
然而，澳洲聯邦法庭 2008 年 5 月曾限制伐木，因為伐木會驅使塔思馬尼亞楔尾鵰與虎皮鸚鵡瀕臨滅絕；但隨後又在聽證會上表示伐木可以進行。
長期抵抗塔思馬尼亞的林地地面伐木工程的澳洲綠黨領袖，也是現任參議員布朗(Bob Brown) ，在法庭與議會上同意澳洲鳥類中心的說法，認為在瀕危鳥類居住的老熟林中進行伐木作業是 『 國恥 』。
A five-year report card on the state of Australia's birds by Birds Australia shows many of the continent's unique native species are in decline due to habitat loss, drought and introduced predators.
Environment Minister Peter Garrett launched the report at Parliament House today, saying, "The State of Australia's Birds 2008 spells out clearly what is going on with our birdlife."
"Knowledge is the foundation of good conservation and the knowledge contained in this report is immensely important as we strive to protect, conserve, and where possible, improve our environment," Garrett said.
Dr. Graeme Hamilton, Birds Australia chief executive, said, "Although the report deals with birds, the findings have much broader implications for nature and society. Birds are indicators of national quality of life. This loss of bird biodiversity is serious as it will also reflect the loss in other groups such as mammals, reptiles, and plants."
Hamilton says Birds Australia, the country's oldest and most respected national bird conservation organization, wants to work with state and commonwealth governments to reverse the trend in losses in bird biodiversity.
This is the sixth state of Australia's birds' report, and presents an up-to-date overview of the health of bird populations in Australia and the main challenges to their sustainability.
This 2008 report focuses on trends in bird populations revealed by some 50 long-term monitoring programs that have been running for up to 40 years.
The report shows that trends in bird populations are mixed, but more species are in decline than were reported in 2003. Common birds are far less common than they once were. For example, populations of the familiar Australian magpie, Gymnorhina tibicen, have slumped.
Water birds are in steep decline, particularly in the parched Murray-Darling basin due to drought and poor water management practices, the report shows.
"Numbers of migratory and resident shorebirds have fallen dramatically in recent years," Hamilton said. "Birds in the bush are faring little better."
"Woodland birds, such as robins, thornbills, fantails and treecreepers, which feed on insects on or near the ground, have all declined in south-eastern Australia due to habitat clearance and other modification," he said.
The report also shows some success where a number of threatened species have increased in population. Birds such as Gould's petrel, glossy black-cockatoo and superb parrot are all faring better than they have in the past.
Found only in Australia, the Tasmanian wedge-tailed eagle, Aquila audax fleayi, is federally listed as Critically Endangered. (Photo courtesy Wildlife Tasmania)
"What's heartening is the proof that where species have been actively managed with recovery plans we are seeing a great result," Garrett said.
But in May 2008 the Australian Federal Court ruled that the logging will drive Tasmania's giant wedge-tailed eagle and swift parrot towards extinction - then on appeal said the logging could go ahead.
Australian Greens leader Senator Bob Brown, who has battled logging in Tasmania on the ground, in court and in Parliament, observed that the Birds Australia report calls old-growth logging in Tasmania "a national disgrace" because endangered bird species lived there.
From Cambridge, England, Alison Stattersfield, BirdLife International's head of science, said, "Birds Australia have done an impressive job of analyzing the latest information on trends in bird populations. Their findings are extremely concerning and mirror those presented in BirdLife International's 'State of the world's birds' report published last year."
"Globally, there is increasing evidence from long-term monitoring studies of major changes in bird communities and their habitats, with many species declining and few increasing," Stattersfield said. "Our conservation efforts need to be geared up tremendously to halt this loss of biodiversity."