Archive for category Conservation

Playing God


By Bridie Smith, Science Editor, The Age

The noise is piercing and poignant. It starts as a determined drill reminiscent of the “tut-tut” of Skippy – but delivered with a bit more chirrup – then accelerates to a pitch and pace rivalling that of a lorikeet. Then it goes quiet. That’s it. The last call, made by the last Christmas Island pipistrelle bat. It lasts barely 40 seconds.

Before the Christmas Island pipistrelle left the world for good, he was recorded over three nights as he moved through the rainforest. Using ultrasonic pulses of sound to forage for food, this bat was feasting on the fly: expertly catching and consuming insects mid-air. If he was aware scientists were tracking him, he wasn’t obliging them. More than 250 kilograms of equipment had been lugged to the tiny island outpost in the Indian Ocean, 1500 kilometres north-west of the Australian mainland, as part of a desperate attempt to rescue his species.

But he was having none of it. He gave the harp nets and mist nets the slip, zipping over the top, night after night. And he ignored a purpose-built 15-metre-long tunnel trap, despite it being set up in one of his favourite foraging spots, a corridor lined with thick rainforest vegetation. His calls, picked up by detectors, indicated he was active. He flitted between feeding sites and reassured researchers with frequent banter. But on the fourth night, the synchronised detectors planted on his island home met silence. Without intending to, scientists had captured the last call of a species, made on its last night in existence: August 26, 2009.

Tasmanian devil. (Illustration by Joe Benke.)Tasmanian devil. (Illustration by Joe Benke.)

For scientists, the experience was shattering. Years on, many who made the long trek to the island are still mourning the loss of the tiny 3.5-gram creature. Rupert Baker, life science general manager at Healesville Sanctuary – a Victorian zoo specialising in native Australian animals – was on the expedition and remembers returning to camp burdened with the knowledge that a species had vanished for good. ”Everything on Earth is part of one big complex carpet … and each strand that you take away makes us a little bit more impoverished,” he says.

But for others, the pipistrelle’s plight prompted an uncomfortable question: should the rescue mission have taken place at all? And now, given the limited dollars available for conservation, some respected scientists are calling for a tough new way to preserve the nation’s threatened species: triage.

The concept, first applied during the Napoleonic Wars, is a way of prioritising the treatment of patients. Generally speaking, patients fall into one of three categories: those who are likely to live, regardless of what care they receive; those who are likely to die, regardless of what care they receive; and those for whom immediate care might mean the difference between life and death.

Christmas Island pipistrelle bat. (Illustration by Joe Benke.)Christmas Island pipistrelle bat. (Illustration by Joe Benke.)

It is a process familiar to viewers of the film and later TV series M*A*S*H, set in the chaos of a mobile military hospital during the Korean War, and that to a lesser degree plays out daily in hospital emergency rooms. In times of disaster and war, it amounts to a pragmatic hierarchy of care based on a patient’s chances of survival given the severity of their condition and the resources available to treat them. Applied to Australia’s native animals, it is a controversial plan that hangs on a reluctant recognition that not all creatures can be saved. Proponents argue that cash should be concentrated on the threatened species with the greatest chance of survival. This means someone is going to have to decide which species get on board the ark, which get left behind, and what criteria should separate the two.

The undulating hills around Healesville, north-east of Melbourne, are neatly stitched with vineyards and fields of dairy cattle. Signs along the road leading to the zoo’s bush sanctuary display phone numbers for motorists who find themselves helping injured wildlife; creatures caught in the path of urbanisation and industry.

Jenny Gray, CEO of Zoos Victoria, is standing in an outdoor enclosure with keeper Monika Zabinskas. The pen, carpeted with leaf litter, houses a one-year-old Tasmanian devil. The animal was born here and, as a result, lives free of the devastating facial-tumour disease that has destroyed 50 per cent of her species across two-thirds of Tasmania. The devil, effectively a teenager, is showing a particularly independent streak. She squirms and grunts as Zabinskas tries to secure her in a handling pouch. Gray looks on, amused. The creature’s snout and whiskers twitch as she arches her neck towards Gray.

Lord Howe stick insect. (Illustration by Joe Benke.)Lord Howe stick insect. (Illustration by Joe Benke.)

This year, Healesville Sanctuary will spend $3.5 million caring for the most critically endangered species under its wing and managing captive-breeding programs. It is not nearly enough for what is needed, so Gray has had to make tough decisions. The first was to exclude Australia’s threatened native fish and native insect species from the program. ”We’re not guaranteeing we can save every fish and every insect,” she says matter-of-factly. ”The fish are not our expertise. And the insects; we just don’t know enough to know how dire the situation is.”

Instead, the zoo has promised that no Victorian land-based vertebrate species will go extinct on its watch. Within these parameters, the organisation will focus its conservation efforts on 20 species, each listed as threatened, each found only in Australia’s south-eastern states. It is a limited form of triage. ”Our promise is that no species will go extinct, so where do we work?” says Gray. “We work right at that tipping point. We work with the animals on the brink of extinction.”

But is it enough? Australia’s animal extinction rate is among the worst in the world; we are now losing one mammal every 20 to 30 years and one bird a decade. More than 1800 species and ecological communities are listed as threatened nationally. Against this decline is a patchwork of funding: some state, some federal, some from the private sector. None of it adds up to the estimated $100 million a year required to stop threatened Australian plants and animals from vanishing. Yet it has been estimated that up to three times as many threatened species could be preserved if funding was allocated using what some argue is a more rational approach.

Corroboree frog. (Illustration by Joe Benke.)Corroboree frog. (Illustration by Joe Benke.)

Hugh Possingham remembers when the penny dropped for him. Then an academic with the University of Adelaide, he was in Canberra in 1999 in a meeting with the federal government’s threatened species unit when it dawned on him that funds were being allocated to species with no real hope of rehabilitation.

Possingham, now with the University of Queensland and a director of the Australian Research Council’s Centre of Excellence for Environmental Decisions, wondered if there was a better way. So he asked. ”People were very hostile,” he recalls. The main concern was that it meant conceding defeat – admitting that some species were beyond saving. “I said, ‘Well, you are giving up on species that are not threatened.’ It’s an argument that has gone back and forward ever since.”

A birdwatcher since the age of 12, he is a vocal advocate of species triage as a means of keeping Australia’s ecosystems diverse and robust. But he argues that tackling a list of already marginal species from the top down is futile. “We should pick winners rather than struggling away with the ones on their last legs,” he says. Rather than concentrating conservation efforts at the “tipping point”, Possingham advocates focusing on ensuring creatures don’t make the threatened list.

Southern cassowary. (Illustration by Joe Benke.)Southern cassowary. (Illustration by Joe Benke.)

Possingham is one of many who believe the Christmas Island pipistrelle’s rescue mission arrived too late to have any realistic chance of success. Widespread when it was first described in 1900, the bats first showed signs of decline in 1994, thanks to a combination of disease and introduced species including the yellow crazy ant, common wolf snake and black rat. The yellow crazy ant invaded the roosting spots of the bats which, being creatures of habit, do not relocate; returning microbats were sprayed with formic acid by the ants and eaten alive. The snake and rat, meanwhile, preyed on the bat, which had evolved free of tree-climbing predators.

Scientists were on the case but powerless to act without the authority of government. The pipistrelle, one of Australia’s smallest bats and the only microbat on Christmas Island, was listed as endangered in 2001, then critically endangered in 2006. By the following year, the bat was effectively on life support. But a rescue mission was only given the nod in July 2009 – by which stage there were as few as 20 bats left. For many, the pipistrelle was already a lost cause.

One of the most haunting exhibits at Healesville Sanctuary is an empty enclosure – or it might as well be. Among the native vegetation is a rust-coloured silhouette of a thylacine. Standing sideways, with its trademark stripes fanning out from the shoulder blades to the base of the tail, the metal sculpture is a silent reminder of what has been lost. Hunted almost to extinction, the last thylacine died at Hobart Zoo on September 7, 1936.

In the quiet hours before dawn, Gray sometimes lies awake and thinks about the thylacine, and about its closest living relative, the Tasmanian devil. ”I worry that one day I’ll be holding a Tasmanian devil in my hands,” she confided during a 2012 Melbourne TED Talk. ”He’ll be old. His fur will be grey. Patches might be missing. His nose will be dull and cracked.” And he will not be just any devil. “He just might be the last Tasmanian devil on the planet,” she says to the now silent audience. “And after I have taken that decision [to euthanase], they won’t exist any more.”

That said, the devil has one big asset in its battle for life: people like devils. It is easier for people to relate to a fellow mammal than to an insect. When the sanctuary’s teenage devil lets out her revving growls and blood-curdling screeches, it’s near impossible not to attach a personality to her behaviour. Her name, Mulana, is a Wurundjeri word meaning spirit.

Research shows that so-called flagship species – namely large mammals with forward-looking eyes – have the greatest marketing appeal and are most commonly used by non-government organisations to raise money for conservation; think the World Wildlife Fund panda. In human triage it would be morally abhorrent to administer care on the basis of affection or appearance, but in animal triage, looks, or at least charm, count.

Consider the critically endangered Baw Baw frog. For unknown reasons, the drab-looking amphibian with mottled brown-black skin suffered a population decline of 98 per cent between 1993 and 2008 in its southern Victorian habitat. Their numbers have slid even further in the past two years, with fewer than 2500 individuals left in the wild. In 2012, the Victorian government pulled up to $20,000 in funding for wild population surveys. Zoos Victoria has stepped in to allow the annual surveys to continue. But it does nothing to arrest the decline.

Compare the Baw Baw’s plight with that of another amphibian, the striking southern corroboree frog. With its butter-yellow and raven-black markings, it often gets described as charismatic. Its appeal is only enhanced by the fact it doesn’t hop (frog-like) but clambers around its mossy habitat in NSW’s Snowy Mountains. Like the Tasmanian devil, it has a fatal disease to contend with: a highly infectious fungal condition called chytridiomycosis that, like the devil’s tumour, has baffled scientists. Listed as critically endangered, there are fewer than 100 remaining in the wild and its alpine home is shrinking as the planet warms. Despite the obstacles, the black and buttercup beauty receives a combined $350,000 a year in conservation funding from five groups, including the NSW government.

But should a frog (albeit a pretty one) with a vanishing alpine home and a tenuous grip on survival have such a slice of the limited cash allocated to saving threatened species? Should a Tasmanian devil with a population decimated by a so-far incurable cancer be allowed to suck up so much of the conservation dollar, beautiful eyes or not?

The devil, however, has another advantage: its contribution to its society. When you consider the role played by any given species in the broader ecosystem, some creatures really are more equal than others. For the devil, Australia’s largest carnivorous marsupial, its position as a top-order predator makes it a keystone in the finely tuned ecosystem. Sitting at the top of the food chain, such species keep every other one in check, stifling the impact of introduced species such as foxes and preventing herbivores such as wombats and wallabies from eating out the habitat faster than it can regenerate.

On this basis alone – its unique role in its environment – the pipistrelle might have had trouble getting aboard the ark. Bats have been around since the time of the dinosaurs, at least 65 million years. Australia has about 75 types of native bat and microbat. Losing the Christmas Island pipistrelle was not going to cripple the local ecosystem.

Not so the endangered southern cassowary. Despite bad press about its antisocial behaviour (the imposing flightless bird has been known to attack and, on at least one occasion, kill humans), it is a vital seed distributor for 238 plants and trees in its north Queensland rainforest home. It is also the only representative of its subspecies on the continent. While habitat loss, cyclones, cars and dogs have reduced its numbers to less than 1000 in the wild – largely concentrated around Mission Beach, Cooktown and on Cape York – a medley of local, state and national governments are working with community and indigenous groups to turn things around for the giant bird.

That said, the greatest contributors to the health of an ecosystem still frequently miss out on conservation attention. A federal government committee told a senate inquiry last year that mammals, birds and flowering plants were represented in greater numbers in conservation efforts than animals that literally have never grown a backbone. Non-flowering plants, which play a vital role in ecosystems and biodiversity, are simply overlooked.

The prehistoric-looking Lord Howe Island stick insect is an unusual invertebrate, in that it is listed nationally and internationally as critically endangered. It also has a dedicated captive breeding program. Not all threatened insects are so lucky. ”Invertebrate animals are 95 per cent of all animal biodiversity but very few invertebrate are listed as threatened species, even though it is likely that many species would qualify for listing if nominated,” the threatened-species committee told the inquiry.

Hugh Possingham believes that rather than assessing bats, frogs and Tasmanian devils according to the odds of them vanishing from the planet, governments should manage biodiversity by weighing up the cost and chances of success against the unique nature, or taxonomic distinctiveness, of the animal. Echidnas and platypus score highly on this taxonomic scale, while a medium-sized wallaby would get a low score given the variety of members in its family tree.

It sounds drastic. But for Possingham, this is how M*A*S*H medics make their life-and-death decisions. ”Biodiversity is being lost at roughly a hundred to a thousand times the natural rate,” he says, almost in exasperation. ”If we are losing species at up to a thousand times the natural extinction rate, then we are effectively in a war zone.”

Opponents say it is not that simple, and that triage amounts to assisted, unnatural selection. The Austral-asian Bat Society argues that no one has the right to play God. The independent, non-profit Australian Wildlife Conservancy maintains that if funds are invested correctly, we should be able to save everything. Threatened-species scientists Deborah Ashworth and Todd Soderquist argue that applying triage to animals and even plants risks placing the most feasible and affordable projects at the top of the list, while letting the more complicated, long-term or expensive slide to the bottom. ”The simplicity of this approach is very seductive,” they warned in their senate submission.

But governments are coming around to Possingham’s way of thinking. In 2005, Queensland was the first state to introduce a triage test, called Back on Track. The logic underpinning the plan was to recover the greatest number of threatened species. Similarly, Tasmania has focused on 171 threatened species it says can be saved over 50 years at a cost of $155 million. And across the Tasman, New Zealand has identified 700 species in decline and prioritised 300 of those most likely to benefit from intervention.

The Australian Fisheries Management Authority has made its own list; starting with 2000 species, its focus over the past five years has narrowed to less than 70. And in NSW, where almost a third of native mammals, 28 per cent of birds, 18 per cent of reptiles and 13 per cent of plants are threatened, the state government has signed up to prioritise 967 threatened species.

Australia’s first threatened-species commissioner, Gregory Andrews, took up his post in July. Among his tasks is to draw up a list of threatened species most likely to benefit from intervention. “I trained as an economist, so I think of the opportunity cost of everything,” he says. “And there are some species that we are spending a lot more on.”

What, then, to make of the Tasmanian devil? An army of scientists is dedicated to saving the species. Captive breeding programs are well established on the mainland, and small islands off Tasmania have been quarantined for healthy devils. But will science deliver a cure in time? Or, more to the point, should we keep investing in the hope that it might? Granted, the devil’s public appeal will keep the dollars dribbling in, even as its population dwindles. But are we taking finite

finances away from another animal that is will score higher on the triage test? Has the devil earned its place on the ark? For Jenny Gray, the answer is clear. ”We won’t walk away,” she says. “It may be a hopeless cause, but it’s our hopeless cause.”

At the sanctuary, I bring the young devil’s swaddled body closer to mine. I open my forearms a little and spread my fingers wide to support the folds of blanket so she can prop her chin on the edge and watch as keepers prepare her bottle. Her weight is satisfying. Not heavy enough to create strain, but not so light as to seem less than substantial. I know she is there. I can feel her move. Her head bobs like one of those toys on a car dashboard as she sniffs the air with the matt-brown nose at the end of her whiskered snout.

So what say we? Does she get a berth?


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Here Puss, Puss, Puss II

I read a recent blog post highlighting the feral cat problem in Hawaii ( The post mentioned a paper published in Conservation Biology which indicated that Hawaiian residents preferred euthanasia over trap-neuter-release (TNR) programs when it came to feral cat management (;jsessionid=FB4AAB1970A118DB0073E69D40924627.f01t04?deniedAccessCustomisedMessage=&userIsAuthenticated=false). This study was criticised as being flawed and its findings erroneous by Vox Felina, a group that supports TNR (

Whether or not the Conservation Biology study is flawed is irrelevant. What the residents of Hawaii prefer in this regard is also irrelevant. The fact remains, feral cats should not be present on Hawaii. They were introduced in the 1800s and have caused untold destruction to the native bird life since then. These species, like the birds of New Zealand, evolved without the presence of predators and are ill equipped to deal with them. Neutered cats kill just as many birds as cats that have not been neutered.

The debate over TNR and euthanasia only occurs because we have an emotional attachment to cats that has evolved over many hundreds of years. No one appears to be advocating TNR programs for the possums of New Zealand, the rabbits of Australia or the brown tree snakes running rampant on Guam. Why the inconsistency? All four groups of animals are feral and cause untold damage to their new environments, environments which will only recover properly if these animals are completely removed. The only way the New Zealanders were able to successfully reintroduce any of their endangered birds to their offshore islands was to remove every last cat.

As well as the predation issue cats also carry toxoplasmosis. This disease is caused by a small parasite that needs cats to complete its life cycle. It causes no disease in cats but has killed alala (Corvus hawaiiensis), nene (Hawaiian goose; Branta sandvicensis), red-footed boobies (Sula sula) and even the endangered Hawaiian monk seal (Monachus schauinslandi). Toxoplasmosis is also a zoonosis, posing health risks for pregnant women and immunocompromised people (

Unfortunately as long as there are feral cats running around the Hawaiian Islands, its bird species will be at risk of extinction. No TNR programs will remedy that. The only remedy is to remove the cats from the environment. Anything else is nonsensical.

Dr. F. Bunny

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The U.S. Bans GMOs, Bee-Killing Pesticides in All Wildlife Refuges


The U.S. government is creating a safe place for bees in national wildlife refuges by phasing out the use of genetically modified crops and an agricultural pesticide implicated in the mass die-off of pollinators.

The U.S. Fish and Wildlife Service’s National Wildlife Refuge System manages 150 million acres across the country. By January 2016, the agency will ban the use of neonicotinoids, widely used nerve poisons that a growing number of scientific studies have shown are harmful to bees, birds, mammals, and fish. Neonicotinoids, also called neonics, can be sprayed on crops, but most often the seeds are coated with the pesticide so that the poison spreads throughout every part of the plant as it grows, including the pollen and nectar that pollinators such as bees and butterflies eat.

“We have determined that prophylactic use, such as a seed treatment, of the neonicotinoid pesticides that can distribute systemically in a plant and can affect a broad spectrum of non-target species is not consistent with Service policy,” James Kurth, chief of the National Wildlife Refuge System, wrote in a July 17 memo.

The move follows a regional wildlife chief’s decision on July 9 to ban neonics in Washington, Oregon, Idaho, Hawaii, and the Pacific Islands by 2016.

The nationwide ban, however, goes further, as it also prohibits the use of genetically modified seeds to grow crops to feed wildlife.

A FWS spokesperson declined to comment on why the agency was banning genetically modified organisms in wildlife refuges.

But in his memo, Kurth cited existing agency policy. “We do not use genetically modified organisms in refuge management unless we determine their use is essential to accomplishing refuge purpose(s),” he wrote. “We have demonstrated our ability to successfully accomplish refuge purposes over the past two years without using genetically modified crops, therefore it is no longer [necessary] to say their use is essential to meet wildlife management objectives.”

GMOs have not been linked directly to the bee die-off. But the dominance of GMO crops has led to the widespread use of pesticides such as neonicotinoids and industrial farming practices that biologists believe are harming other pollinators, such as the monarch butterfly.

Neonicotinoids account for 40 percent of the global pesticide market and are used to treat most corn and soybean crops in the U.S.

“We are gratified that the Fish and Wildlife Service has finally concluded that industrial agriculture, with G.E. crops and powerful pesticides, is both bad for wildlife and inappropriate on refuge lands,” Jeff Ruch, executive director of Public Employees for Environmental Responsibility, said in a statement.

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Veterinary association to support second year of badger culls

Considering all the data I have read appears to indicate that badger culling to control tuberculosis not only does not work but actually makes it worse as it encourages badgers to move around more, I find it very disappointing that the BVA would support such a dubious activity.

Dr. F. Bunny


The following article appears at:


The British Veterinary Association (BVA) has said it will support the second year of the pilot culls in England. This follows Defra’s response to BVA’s call for improvements to humaneness and effectiveness in light of the Independent Expert Panel (IEP) report on the first year.

The IEP report, published in April, found that the first year of culling failed to meet criteria for effectiveness (in terms of the number of badgers removed) and that the method of controlled shooting had failed to meet the criteria for humaneness. BVA welcomed the report and called on Defra to implement all of the IEP’s recommendations fully.

BVA has remained in constant dialogue with Defra and met with the then Secretary of State Owen Paterson, the Chief Veterinary Officer Nigel Gibbens, and other Defra officials to seek clarification on Defra’s proposals, as well as calling for robust monitoring and collation of results and independent analysis and audit by a non-governmental body.

Defra has moved considerably, confirming a number of changes to its plans. In particular, Defra has confirmed that:

– shotguns would not be used for controlled shooting

– contractor selection, training and assessment would be enhanced

– the number of field observations of shooting and number of post mortem examinations of badgers would be in line with that carried out in year one

– real-time information would ensure a better distribution of effort and that poor performing marksmen would be removed from the field

In addition, and in response to BVA, Defra has committed to an independent audit of the way the protocols are carried out during the cull. BVA is satisfied that the appointment of such an auditor addresses many of our original concerns. However, BVA will continue to call upon the new Secretary of State to put in place independent analysis in order to give confidence to the wider public.

BVA’s position on any further rollout of controlled shooting as a method to cull badgers (and its continued use in the pilots) will be decided once we have assessed the outcomes of the second year.

Commenting, BVA President Robin Hargreaves said: “BVA has always maintained that we could only support the use of controlled shooting as a method to cull badgers if it was found to be humane, effective and safe. We supported the findings of the Independent Expert Panel and called on Defra to implement the recommendations fully.

“We therefore welcome Defra’s proposals to improve humaneness and effectiveness in light of the IEP report, and we have been pleased how far Defra has moved towards BVA’s position, in particular by ensuring a robust and independent audit is in place.

“It is essential that Defra gets this right to allow the veterinary profession to have confidence that controlled shooting can be carried out humanely and effectively. We continue to call upon the Secretary of State to put in place independent analysis of the second year of culling to give confidence to the wider public.

“Badger culling is a necessary part of a comprehensive bovine TB eradication strategy that also includes strict cattle measures and vaccination. Culling remains a hugely emotive issue but we must tackle the disease in both cattle and wildlife. Scientific evidence supports the use of targeted, humane badger culling to achieve a reduction in the disease in cattle.

“I’m proud that the veterinary profession has had such a significant influence on Defra’s position and we will continue to engage with the government to ensure the pilot culls are humane and effective.”

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More governments adopting controversial ‘triage’ approach to conservation


Governments in Australia and internationally are coming round to the idea of taking a ‘triage approach’ to conservation, according to the ARC Centre of Excellence for Environmental Decisions (CEED). This involves agencies focusing available resources on saving as many endangered species as possible, rather than trying to save fewer ‘living dead’ species.

A male superb parrot; this species is listed as threatened in Victoria and vulnerable in the Australian Capital Territory and New South Wales. The entire population may only be a few thousand birds.
A male superb parrot; this species is listed as threatened in Victoria and vulnerable in the Australian Capital Territory and New South Wales. The entire population may only be a few thousand birds.

Credit: Ron Knight


The concept of saving more species for the same cost, or triage, was proposed to the Australian Federal Government in 1999 by Professor Hugh Possingham, now Director of CEED.

Prof. Possingham says the NSW, Tasmanian and New Zealand governments have all adopted versions of conservation triage, and the Queensland and US governments are considering it.

‘Conservation triage is still a sensitive topic because it forces people to acknowledge that we don’t have enough resources to save all threatened species; that choices have to be made, even though we may not like making them,’ he says.

‘In an age of catastrophic decline in the Earth’s and Australia’s biodiversity, we need to acknowledge that the resources we are currently devoting to conservation are not going to save everything.

‘If that’s the case, you have to take a decision what you are going to save – and which species will most repay your efforts to save them. Otherwise you end up spending scarce resource on species you cannot save – and have too little left to save those you probably could have rescued.’

Associate Professor Michael McCarthy, deputy director of CEED, rejects the claims of some environmental groups that adopting a triage policy ‘makes extinction acceptable’.

‘It certainly doesn’t,’ Dr McCarthy says. ‘Instead it forces us to ask: can we save this animal? How much will it cost to do so? How important is it to its ecosystem? And does the community care enough about it to help in the fight to save it?

‘Importantly, triage is not about letting the most endangered species go extinct, it is wisely choosing those species which have the best chance of recovery, rationally accounting for cost and chance of success. The most threatened species may well be the ones that receive most investment.’

Dr McCarthy says triage forces society to acknowledge it is better to save the things it can, rather than devote scarce resources to those it cannot.

‘It also makes the decision about what to save a more public one, which requires society to take greater responsibility for it, instead of decisions being taken behind closed doors.’

Prof. Possingham says that, at a time of limited government funding for conservation, the public will have to shoulder a greater load if it cares about preserving species for its grandchildren.

‘We have some great examples where the community has rallied round to save particular species – an example is the public effort in southern Queensland to save the Richmond birdwing butterfly by replanting the native vines that it feeds and depends on,’ he says.

‘At the moment, governments don’t tell us which species they are not funding – only the ones they are,’ he notes. ‘Under triage you publish the priority funding tables, and the community can then decide where to help.

Source: CEED

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Unfortunately zoos all over the world generate surplus animals. What they don’t do is kill healthy 18 month old giraffes, like Marius at the Copenhagen zoo (

Organisations such as the Association of Zoos and Aquariums in North America and the Zoo and Aquarium Association in Australasia develop studbooks for their species to regulate breeding to maximise genetic diversity. If an animal’s genes become over represented in the zoo population that animal can be contracepted. There is nothing unique about giraffes. They can be castrated like any other animal or animals can be separated to avoid inappropriate pairings. The issue with Marius really started over two years ago. If his genes were over represented why were his parents allowed to breed, and why wait until the giraffe is 18 months old before euthanasing him?

Zoos are too small to be treated individually. Instead they form part of a global collective that constantly moves animals around to maximise breeding effectiveness. Zoos regularly release lists of animals that they want and that they have on surplus. The zoos I have worked for frequently move their surplus animals to other zoos that want them. I do not understand why this could not have been done with Marius as a British zoo made a place available to him.

Many animals become surplus because of their advancing years. The other members of the group kick them out or they are no longer reproductively viable and so are removed to live out the rest of their years in isolation off display. In the wild they would be killed by predators. The zoos I have worked for no longer have a policy of management euthanasia, unless animal welfare is at stake. This does, however, raise a difficult point when it comes to herd animals. Is it better to keep them in social isolation for the rest of their lives, or is it better to euthanase them?

This was hardly the case with Marius and a more enlightened solution to the “problem” caused by a young healthy giraffe could surely have been found.

Dr. F. Bunny

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Given that we are in the season for wishful thinking it seems appropriate that I should come up with a wish of my own. After all the time I have spent banging on about how zoos are doing it all wrong it is about time I made a few suggestions outlining how zoos could be doing it right. So, my wish is for my ideal zoo.

As I have said before, I am not against zoos per se, just the concept of zoos as entertainment rather than conservation centres. In order to avoid my future wrath I have devised a series of criteria that zoos must satisfy to be considered “ideal”. These are the Bunny Criteria. After all, what’s the point of devising standards if you can’t name them after yourself in order to achieve some level of immortality (although, as Woody Allen said, “I don’t want to achieve immortality through my films. I want to achieve immortality by not dying.”)?

  1. The zoo must be a non-profit organisation. As long as zoos are forced to pander to the public and the almighty dollar they will always risk putting money before animal welfare and conservation. This can be achieved through wealthy patrons/owners or government sponsorship e.g. White Oak Plantation/White Oak Conservation Center (, and the Lubee Bat Conservancy (, both in Florida and both closed to the general public.


  2. With so many endangered species in the world and so few zoo places the zoo must focus on maintaining these species with no, or an absolute minimum, of non-endangered species e.g. the Durrell Wildlife Conservation Trust ( on Jersey Island.


  3. Zoos must have excellent education programs ranging from intelligently designed play areas for children e.g. Copenhagen zoo ( to structured classroom activities for school children to guided presentations within the zoo (presentations that do not include anyone patting tigers or other inmates) e.g. Arizona-Sonora Desert Museum (


  4. Zoos must be connected to in situ conservation programs by releasing captive bred species to the wild, assisting with habitat management and encouraging visitors to adopt conservation related activities.


  5. Zoo enclosures must meet certain minimum standards, which are already in place in many countries and administered through organisations such as ZAA, AZA, etc. However, the old adage of the bigger the better certainly applies when it comes to zoo enclosures. Every effort must be made to hold animals in a natural environment, in natural groups and fed a natural diet. If this cannot be done satisfactorily then the animal has no place in the zoo e.g. elephants in small urban zoos, polar bears in Australia, gorillas in Canada, etc.


  6. Zoos should focus primarily, if not exclusively, on local fauna and maintain as much of the local natural environment as possible in order to encourage visitors to enjoy and conserve that environment and the species contained therein e.g. Tidbinbilla Nature Reserve in Canberra ( Too many problems occur in zoos because of an inability to adequately duplicate an animal’s natural environment. The further from home that animal is the greater these problems will be.

There they are, The Bunny Criteria. No doubt there is plenty of room for improvement as it is hard to be dogmatic about these sorts of things. If a species is not local but endangered with an in situ conservation program e.g. the Mauritius kestrel, should it be maintained in a zoo? Yes. If a species is local and not yet endangered but can be used in the zoo to highlight environmental issues e.g. koala and habitat fragmentation, should it be kept in a zoo? Probably. If a species is not local and not endangered but has a high profile thatis used to bring visitors through the gate e.g. elephant, should it be in the zoo? No.

I am happy for animals to live in zoos as long as their welfare remains paramount and their presence realistically facilitates their conservation, rather than visitor entertainment. Don’t kid yourself into thinking that breeding one elephant every couple of years even comes close to satisfying this criterion.

Dr. F. Bunny

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