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Tilt Renewables says will push ahead with 54MW Salt Creek wind farm in Victoria, and will go "merchant" without a power purchase agreement.

Yellow-footed rock wallabies bounce back in South Australia's northern pastoral region; we're cooking sausages in Cloncurry; making lunch at Helen Springs Station; and whipping up a duck-egg pavlova.

Originally published in the Manchester Guardian on 7 July 1917

SURREY
Helped by moisture from the north downs, the river to-day runs higher, swirling along by the tall grasses and the loosestrife, bending reeds, and flags, flowing above the few yellow blooms on the near banks, and lifting “water-blobs” like small boats, which rock a little while the tide runs in. Kingfishers on the wing show now of a deep, now of a pale blue as a momentary light strikes from the sun. They perch on a swaying willow stem which dips to the stream, then a glint flashes all along the stretch of water and one of them flies in and with it gives a picture of many hues. Swallows, skimming low, are wonderfully white in plumage when they make a sudden turn, and there is a constant low warbling of the smaller willow wrens. Up the bank, where the teasel is breast high and its prickly bloom is forming, linnets whistle a few notes before they move restlessly from bush to bush.

Related: How to access the Guardian and Observer digital archive

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Red-eared sliders were once popular pets but are currently banned in Australia. These turtles are still regularly found in the wild and being kept as illegal pets. Pablo Garcia-Diaz, Author provided

A taste for owning exotic animals can be addictive – the more flamboyant the better. Earlier this month border security agents found 50 live turtles and lizards smuggled in Lego boxes sent from Indonesia. In April customs officials found a parcel marked “2 pair shoes” that turned out to contain venomous vipers, tarantulas and scorpions.

According to the Animals Medicines Australia 2016 survey some two-thirds of Australian households have pets – more than 24 million animals in total. Not surprisingly, dogs and cats are the most popular (38% and 29% of households, respectively), whereas aquarium fish and birds rank somewhere in the middle (both 12%), and reptiles and less common mammals are kept in some households (both less than 5%).

The federal government largely legislates the owning of exotic pets. The law defines “exotic” as “animals that do not occur naturally in the wild in Australia” – which actually includes dogs and cats. However “domesticated mammals”, which also covers cows, sheep and other farm animals, are generally legal to buy and own. Commercial trade in exotic reptiles and amphibians, on the other hand, has been banned since 1999.

Whether an exotic animal is kept legally or not, some will find their way to the Australian wild through escape or release, posing a potential pest risk. There are some simple things governments and pet owners can do to improve the way this risk is handled, to keep animals and humans safe.

We don’t really know how many exotics are in Australia

Most local councils only require dogs (and sometimes cats) to be registered by their owners. Other pets, whether exotic or native, do not need to be registered. Indeed an owner of an exotic animal is not required to report or register the animal in any way. This means there are very little reliable data and it’s difficult to say how many exotic pets are kept in Australia.

We highlight two cases from our own research: birds and reptiles.

Bird-keeping is common in Australia, particularly of parrots and finches. More than half the bird species traded are exotic and mostly originate in South America, Africa and Asia. Rose-ringed Parakeets are one of the most commonly kept exotic pet bird, and the most frequently reported as having escaped. They are seen as a potential threat because they are a serious agricultural pest in its’ native and exotic distribution, and have a very high risk of establishing in Australia.

The Rose-ringed parakeet is a common pet in Australia and presents a potential biosecurity risk. Dick Danies/Wikimedia

Reptiles – generally skinks, turtles and dragons – are less popular pets than birds. Nonetheless, judging from the posts on public trading webpages, a variety of native reptile species are kept and traded by hobbyists, also including crocodiles and snakes.

Unfortunately, little is known about native reptile trading in Australia and further research is needed. And while native reptiles can be kept legally, illegal exotic reptiles are a serious problem. In a previous article for The Conversation, we reported that 28 alien reptile species were illegally kept in Victoria between 1999 and 2012. More than a third were highly venomous snakes, posing a real risk to human safety.

Responsibly caring for exotic pets

If you own or want to buy an exotic pet, you must be aware of the regulations that apply to you (you can Google “exotic pet regulations” plus the name of your state or territory). Each jurisdiction keeps official lists of those species that may be kept within their borders, with or without a permit. These lists can be found on local government websites or obtained from their relevant departments.

People should also be able to register all of their pets, including exotic ones. Governments need to promote public awareness of the importance of registration (even if it’s not legally required), and ensure the processes are simple, accessible and affordable.

If you lose your exotic pet, it’s important to alert your state or territory biosecurity agency. Each jurisdiction has its own agency, but examples are the Western Australia Department of Agriculture and Food or Agriculture Victoria. If you want to recover your lost pet the best available option is to report your loss to one of the many missing animal websites.

Governments, when facilitating the registration process, will need to establish best practices to collect and analyse information so that the nature and extent of pet ownership may be better known, monitored and managed.

Ultimately, the burden of safe and responsible pet ownership should be shared. While public awareness is crucial, the key to a sustainable pet trade is mutual partnership between pet owner communities and governments. This is particularly important as pet sales and trade shift further to an online environment.

Pablo García-Díaz received funding from the Invasive Animals CRC and the Department of Education and Training (Australian Government). He is currently also affiliated with Landcare Research New Zealand.

Miquel Vall-llosera received funding from the Invasive Animals CRC.

Phill Cassey receives funding from the Australian Research Council.

Phil Allen on Northern Ireland’s priceless natural assets, Paul Townsend on Pope Francis’s plea for the environment, and Philip Bisatt on the absence of trees from British town planning

Re your editorial on the Great Barrier Reef and “the values that money can’t measure” (29 June), Dieter Helm’s “natural capital” approach recognises that some assets are literally priceless and must be maintained.

As an example, the drainage path of the river Bann is being degraded at a great and almost irreversible rate. Lough Neagh, which is in its course, has been losing its characteristic fenland vegetation through nitrification from slurry runoff. The once vast flocks of overwintering wildfowl are long gone.

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After President Trump withdrew from a climate agreement, Prof Hawking warns of the threat from global warming.

Stephen Hawking warns over Donald Trump's climate policy in a BBC interview marking his 75th birthday.

As ‘permanent tourists’ move to the western US, the oil and gas-captured Republican party is fighting to keep locals out of managing public lands

A year ago, residents of Yucca Valley, California, along with Bureau of Land Management (BLM) and US Forest Service officials, filled the town’s community center for a public meeting about the Sand to Snow National Monument. Designated early in 2016 by Barack Obama – and now under review for resizing by the Trump administration – the monument spans from the desert near Yucca Valley to the San Bernardino mountains about an hour east of Los Angeles.

Residents wanted to know what would change once their back-yard BLM land was converted into a national monument. Would the monument prohibit public access? Would it mean an end for hunting? What would it do for protecting area wildlife? Even those who had opposed Obama’s creation of Sand to Snow and the nearby Mojave Trails national monument came to the meeting, asking how they could have their voices heard in planning processes.

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A powerful rocket, the Long March-5 Y2, failed an hour after lift-off from Hainan island.

Michael Gove says the UK will be ‘taking back control’ of its waters and will ‘decide the terms of access’ for foreign fishing after leaving the EU. Speaking on BBC1’s The Andrew Marr Show, the environment secretary announces foreign fishing will be banned upon the withdrawal from the London fisheries convention, an arrangement that allows other countries to fish in British waters

• Watch the full episode on the BBC iPlayer
• Michael Gove mounts defence of university tuition fees

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Michael Gove announces withdrawal from London fisheries convention, but experts say sustainable fishing is ‘much more than which country fishes where’

The government has announced its withdrawal from an arrangement that allows foreign countries to fish in British waters, with environment secretary Michael Gove claiming that the UK was “taking back control”.

On Monday ministers will trigger withdrawal from the London fisheries convention, signed in 1964 before the UK joined the European Union, to start the two-year process to leave the agreement. The convention allows vessels from the UK, France, Belgium, Germany, Ireland and the Netherlands to fish within six and 12 nautical miles of each other’s coast lines.

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When the Soviet Union collapsed a vast store of spent nuclear fuel was abandoned in the Russian Arctic – an environmental disaster waiting to happen. Decades later an international clean-up has finally begun

As the Rossita pulled away from the pier at Andreyeva Bay, sounding a long boom of its horn, a military band struck up a jaunty march. On board the ship were nine sealed metal casks, each four metres high and weighing 45 tonnes, containing canisters of spent nuclear fuel. Dozens of Russian and foreign nuclear specialists looked on applauding, as the chilly rain of a northern summer fell on the bay deep inside the Russian Arctic.

The ceremony, held on Tuesday afternoon, marks the culmination of a long international project to begin removing nuclear fuel from the site, formerly a top-secret Soviet installation. Nuclear specialists say Andreyeva Bay contains the largest reserves of spent nuclear fuel in the world, in fragile conditions that have disturbed the international community for years.

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Taking possessions to be repaired – bicycles, clothes, shoes, anything – instead of throwing them out and replacing them is green gold

An unassuming repair shop might not look like a major disruptive force. But extending the lifespan of your possessions by getting them fixed is one of the most effective green direct actions available.

The cycling community is at the forefront of the repair economy

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Ministers argue ending the arrangement will help the UK take back control of access to its waters.

Japanese underwater photographer Ryo Minemizu has photographed the plentiful but often ignored residents of the ocean.

Conservationists admit the word is divisive, particularly among farmers

Just down the road from Gatwick, the neatly hedged English countryside gives way to an exuberant, utterly alien-looking landscape. Arable fields are obliterated by dense thickets of sallow. Eight metre-wide blackthorn hedges spill into flowery meadows. Wild pigs and red deer run rampant through ragwort, thistles and other weeds. The air is alive with birdsong rarely heard in Britain today – spectacular bursts of nightingale and the purring of turtle doves.

In barely a decade, rewilded nature has conquered Knepp Castle in West Sussex. Rewilding appears to be conquering conservation too. As Brexit and the savaging of agricultural subsidies loom, farming may also be engulfed by this new wild. But as rewilding blossoms, so do controversies. Scientists recently warned that wild boar illegally released into Scotland could carry the CC398 strain of the MRSA superbug that is resistant to antibiotics.

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A four-year research project has found the flocks are a major threat to British birds, farms and vineyards

It is not what you would expect to hear in the Conservative suburban heartlands of Beckenham, Bromley and Boreham Wood in south-east England – homeowners voicing their approval for a wave of immigrants from Asia.

As one of the senior researchers studying the flocks of Afro-Asians said: “Many people say they bring an enormous sense of wellbeing. They say they are charismatic, beautiful, exotic. They absolutely love having them around.”

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The fourth annual BigPicture Natural World Photography Competition aims to celebrate the diversity of life on Earth, and encourages people to protect and conserve it. Thousands of entries were received for the competition held by the California Academy of Sciences, and here are the winners

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The Mexican government is to use US Navy-trained dolphins to locate and herd endangered vaquitas.

Cardigan, Wales I saw the cob and pen paddling in golden light, between them a single, black-billed ball of grey down

The bell-beat of mute swans’ wings came with a grey dawn in early March. A pair of swans touched down in the river Teifi’s tidal reaches upstream of Cardigan town bridge. On wind-ruffled waters they kept proximity, gliding around in search of food, accompanied at respectful distance by small flocks of teal and unruly gangs of mallard drakes.

The old shipwright from the small boatyard most days ventured out of his workshop to sit on the slipway, talk to the swans, feed them by hand. They would respond with sonorous high grunts that belied their name. Occasionally the huge cob, neck outstretched, tore off downriver, wings flailing, to warn off some presumptuous intruder. This was his territory and no other’s.

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