The Mysterious Irish Island That's Populated by Australian Wallabies

William Murphy via Flickr // CC BY-SA 2.0
William Murphy via Flickr // CC BY-SA 2.0

Peer out the passenger window of an airplane arriving or departing Dublin Airport in County Dublin, Ireland and you may get a bird’s eye view of two islands with significant stories behind them. One is Ireland’s Eye, thick with fog and gothic history—an artist named William Kirwan was convicted of killing his wife during a holiday there in 1852. The other is Lambay Island, a rocky, green terrain spread across 650 acres that was long ago used as a layover for Vikings and pirates in pillaging operations.

What really sets Lambay apart, however, needs to be seen up close—and then only if you're lucky. At any given time, between 100 and 140 red-necked wallabies roam the grounds, bouncing away from tourists and residents and grazing on grass along with cattle and deer. Natives of Australia, the displaced wallabies have attracted plenty of attention and curiosity over the decades. Who brought them? And what happens if they begin to outgrow a small slice of land more than 9000 miles from home?

An aerial shot of Lambay Island. Wikimedia Commons

In April 1904, banker Cecil Baring was browsing Ireland’s Field newspaper when he came across a classified advertisement that caught his attention. “Island for Sale” referred to Lambay, which had been owned for most of the previous century by the Talbot family and was named after the Norse word for “lamb.”

Baring paid a sum in the range of £5250 to £9000 (around $700,000 to $1,200,000 today), an investment that secured Lambay as a Baring property handed down from one generation to another. Cecil commissioned an architect named Edward Lutyens to renovate the worn castle that sat on the land; it eventually became a refuge for Cecil’s adult son, Rupert, who became a fixture in newspapers in 1935 when his fiancé, Angela, sued him for “breach of promise” after he didn't marry her. (Their published love letters became the entertainment of the day, with Rupert's pet name disclosed as "Boodles.")

In the 1950s, the Barings reportedly planned for a zoo to occupy Lambay. Among the animals brought over were wallabies, tortoises, and lizards. It’s not known how many were delivered or how many survived, but "Boodles" apparently took a liking to the kangaroo’s smaller relatives. In the 1980s, when the Dublin Zoo experienced a surge in wallaby numbers, the Barings agreed to take seven of them for Lambay.

Rupert died in 1994, but the wallabies remained. Rupert’s son, James, a pilot who owned London’s Regent Sound Studio that hosted the Beatles and the Rolling Stones, inherited the island. Once, kayakers decided to step on the grounds and ran into James, asking if the legend about the wallabies was true. It was.

James Baring died in 2012, leaving the island to the Lambay Estate Company and his son, Alex, who is a part-time occupant and plans on opening the area to a high-end tourist trade. (Alex did not respond to requests to comment for this article.)

Clearly, the unusual sight of roving, red-necked wallabies is intended to be part of the attraction. But what do the animals make of Irish landscapes when the species was reared in Australia?

“They’re actually quite adaptable,” Kevin Drees, a director of animal care at Blank Park Zoo and an expert in captive wallabies, tells mental_floss. Thanks to an ability to grow a dense coat of fur, “they can cope with cooler temperatures than kangaroos, which is one of the reasons they’re so popular in zoos.”

Lambay is not so strange an environment for them as it might appear. (It's also not the only island outside of Australia they occupy: Inchconnachan in Loch Lomond, Scotland has had wallabies for over 60 years after a wealthy vacation resident introduced them in the 1940s.) While the presence of puffins and cattle makes for what Drees calls “an unnatural grouping of animals,” they have plenty of grass to munch and plenty of places to hop and hide when their shy instincts kick in around humans. Docile, they’re unlikely to mimic the boxing kangaroos of Australian lore, and the only time they might get anxious is if a visitor brings a dog along.

“They’re very clever,” Michael Bermingham, a business associate of Baring’s who has made several treks to the island, tells mental_floss. “They’ll climb up on rocks where you can’t follow.”

Although the Barings allow boat and walking tours, it’s by invitation only: The island remains largely untouched by human intervention. Only the Barings, a few farmhands, and a veterinarian spend any real length of time in residence there. “The animals there really tend to the land,” Bermingham says. “Grazing is important to maintain it.” And while wallabies like to swim, it’s virtually impossible they could make it the three miles to shore to invade the coast.

The real problem, as Drees sees it, is twofold. Wallabies can reproduce quickly, leading to potential overpopulation problems. (Their babies, known as joeys, can feed from the mother while a fertilized egg waits for an opportune time to continue development and take over the pouch.) And because the inhabitants are descended from a small number of non-native relatives, inbreeding is a possibility.

“Inbreeding can lead to health issues, like heart defects,” he says. "You'd have to bring in [new] wallabies to keep that from happening."

For now, the wallabies of Lambay appear to be thriving. And one way the Barings appear to be keeping their numbers under control is by entering into a partnership with Bermingham, who has an exclusive agreement to claim a portion of the wallaby population for his own purposes.

“I like making wallaby slider burgers," he says.

iStock

Bermingham is co-owner of M&K Meats, a prospering meat supplier in Rathcoole that enjoys a brisk trade in organic, farm-to-fork premium meats that he sells to high-end clients all over Ireland and the UK. Three years ago, he agreed to peddle wallaby meat sourced exclusively from Lambay Island.

“It’s very lean, very rich in protein,” he says. “I don’t know if it’s the grass diet, or the herbs on the island, but it has a fascinating flavor.”

Wallaby steak, he admits, is “not going to be everyone’s cup of tea.” Still, interest in the meat appears to be gathering momentum. “Wallaby meat in Ireland—people go, ‘What?’ Some are intrigued, some take it or leave it.”

M&K appears to be taking enough of it to keep the population curbed. Culling is done on site, with hunters dispatching of the wallabies using rifles. Because they’re so averse to humans, Bermingham says it can make a round-up difficult. “The last time, it took a guy three days to get four of them.”

Bermingham also captures rabbit and deer on site, with cattle and lamb taken as livestock. Because of the island’s seclusion, he says the meat is untouched by any of the illnesses that can plague agricultural farming on the mainland.

It’s not yet known whether Baring’s plans for tourism will include an on-site wallaby dining experience. But the time may have come when the animals are less an invasive species and more an integral part of the island’s unique ecosystem.

“If it’s about nature, no, the wallaby doesn’t fit,” Drees says. “But if it’s about the history of the island, then perhaps they see the value in it. It would make a good study in human-altered habitats.”

Chimpanzees Bond by Watching Movies Together, Too

Windzepher/iStock via Getty Images
Windzepher/iStock via Getty Images

Scientists at the Wolfgang Kohler Primate Research Center in Germany recently discovered that, like humans, chimpanzees bond when they watch movies together, the BBC reports.

In the study, published in Proceedings of the Royal Society B, researchers stationed pairs of chimpanzees in front of screens that showed a video of a family of chimps playing with a young chimp. They found that afterward, the chimps would spend more time grooming and interacting with each other—or simply being in the same part of the room—than they would without having watched the video.

They gave the chimps fruit juice to keep them calm and occupied while they viewed the video, and they chose a subject that chimps have previously proven to be most interested in: other chimps. They also used eye trackers to ensure the chimps were actually watching the video. If you’ve ever watched a movie with friends, you might notice similarities between the chimps’ experience and your own. Drinks (and snacks) also keep us calm and occupied while we watch, and we like to watch movies about other humans. Since this study only showed that chimps bond over programs about their own species, we don’t know if it would work the same way if they watched something completely unrelated to them, like humans do—say, The Lion King.

Bonding through shared experiences was thought to be one of the traits that make us uniquely human, and some researchers have argued that other species don’t have the psychological mechanisms to realize that they’re even sharing an experience with another. This study suggests that social activities for apes don’t just serve utilitarian purposes like traveling together for safety, and that they’re capable of a more human-like social closeness.

The part that is uniquely human about this study is the fact that they were studying the effect of a screen, as opposed to something less man-made. The chimps in question have participated in other studies, so they may be more accustomed to that technology than wild apes. But the study demonstrates that we’re not the only species capable of social interaction for the sake of social interaction.

[h/t BBC]

10 Facts You Should Know About Mosquitoes

tskstock/iStock via Getty Images
tskstock/iStock via Getty Images

Between the itching and the welts and the fears of mosquito-borne viruses, it's easy to forget that mosquitoes are a wonder of evolution, and that maybe they don't get a fair shake from us. Of more than 3000 known species, only 80 actually bite people, and at least one eats other mosquitoes for us. They grow from egg to adult in just five days, begin mating within minutes of hatching, and possess, by way of their stinging mouthparts, some of the coolest appendages in the animal kingdom.

1. Mosquitoes are excellent flyers in bad weather.

The average raindrop is 50 times heavier than the average mosquito, yet they buzz around in the rain with no problems. If a Boeing 747 got whacked with a similarly scaled-up raindrop, there would be 2375 tons of water coming down on it, and things probably wouldn’t turn out as well as they do for the mosquito. How do the insects do it?

A common urban legend said that the bugs were nimble enough to dodge the drops. A few years ago, a team of engineers from the Georgia Institute of Technology watched real mosquitoes and Styrofoam dummy mosquitoes with a high-speed camera during a rainy flight to see if that’s what was really happening. They found that the bugs don’t fly fast enough to dodge the drops, but their slowness is what keeps them from getting knocked out of the sky. A mosquito’s low mass even at slow speed doesn’t provide enough of a target for a raindrop to splash on collision. Instead, the drop just deforms, and doesn’t transfer enough momentum to the mosquito to disrupt its flight.

2. Texas is the mosquito capital of America.

Of the 3000 species of mosquitoes around the world, at least 150 are found in the United States, and 85 of those call Texas home. When people say everything's bigger in Texas, you can also include the biodiversity of the state's biting, disease-carrying insects.

3. Some mosquitoes are truly dangerous to humans ...

The female mosquito, which is the one that stings and sucks blood, is an incredible transmitter of disease and, because of that, the deadliest animal in the world. Each year, the malaria parasites they transmit kill 2 million to 3 million people and infect another 200 million or more. They also spread pathogens that cause yellow fever, dengue fever, Rift Valley fever, Chikungunya and West Nile disease.

4. ... and some mosquitoes are harmless.

Not every species of mosquito sucks blood from people, and among those that do, not every one transmits disease. The blood suckers don’t even need to bite you for every meal. Males live entirely on nectar and other plant fluids, and the females’ diet is primarily plant-based, too. Most of the time, they only go after people when they’re ready to reproduce, because blood contains lipids, proteins, and other nutrients needed for the production of eggs.

5. MosquitoEs actually help the environment.

When you’re rubbing calamine lotion all over yourself, mosquitoes might not seem to serve any purpose but to annoy you, but many species play important ecological roles. The mosquitoes Aedes impiger and Aedes nigripes, which gather in thick clouds in Arctic Russia and Canada, are an important food source for migrating birds. Farther south, birds, insects, spiders, salamanders, lizards, frogs, and fish also eat different mosquito species regularly. Plants need them, too, and some, like the blunt-leaved orchid and endangered monkeyface orchid, rely on mosquitoes as their primary pollinator.

Some mosquito species are also excellent at mosquito control. Species of the genus Toxorhynchites feed on the larvae and immature stages of other mosquitoes and will sometimes even cannibalize members of their own species.

6. Mosquitoes are amazing hunters (as if we needed to tell you that).

Mosquitoes are adept at picking up on the chemicals given off by their human hosts. They can detect the carbon dioxide in our breath, the 1-octen-3-ol in our breath and sweat, and other organic substances we produce with the 70-plus types of odor and chemical receptors in their antennae. These receptors can pick up traces of chemicals from hundreds of feet away, and once the mosquito closes in, it tracks its meal chemically and also visually—and they’re fond of people wearing dark colors.

7. Mosquitoes can be picky.

If it seems like you’re always covered head to toe by bites while people who were sitting right next to you only have one or two, it’s not just paranoia; the skeeters actually are out to get you. Some people happen to give off more of the odors and compounds that mosquitoes find simply irresistible, while others emit less of those and more of the compounds that make them unattractive to mosquitoes—either by acting as repellents or by masking the compounds that mosquitoes would find attractive.

8. A female mosquito's mouth is primed for sucking blood.

A mosquito doesn’t simply sink its proboscis into your skin and start sucking. What you see sticking out of a mosquito’s face is the labium, which sheaths the mouthparts that really do all the work. The labium bends back when a mosquito bites, allowing these other parts to pass through its tip and do their thing. The sharp, pointed mandibles and maxillae, which both come in pairs, are used to pierce the skin, and the hollow hypopharynx and the labrum are used to deliver saliva and draw blood, respectively.

9. Mosquito saliva prevents blood clotting.

The saliva that gets pumped out from the hypopharynx during a bite is necessary to get around our blood’s tendency to clot. It contains a grab bag of chemicals that suppress vascular constriction, blood clotting and platelet aggregation, keeping our blood from clogging up the mosquitoes' labrum and ruining their meal.

10. Mosquitoes can explode.

Blood pressure makes a mosquito's meal easier by helping to fill its stomach faster, but urban legend says it can also lead to their doom. Story goes, you can flex a muscle close to the bite site or stretch your skin taut so the mosquito can’t pull out its proboscis and your blood pressure will fill the bug until it bursts. The consensus among entomologists seems to be that this is bunk, but there is a more complicated way of blowing the bugs up. To make a blood bomb, you’ve got to sever the mosquito’s ventral nerve cord, which transmits information about satiety. When it's cut, the cord can’t tell the mosquito’s brain that its stomach is full, so it’ll keep feeding until it reaches critical mass. At least one researcher found that mosquitoes clueless about how full they were would keep sucking even after their guts had exploded, sending showers of blood spilling out of their blown-out back end.

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