Scientists Think They Know Why This Uninhabited Island Is Covered In Dirty Rubber Bands

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Mullion Island is a small, uninhabited bit of rock off the southwestern coast of the UK. It’s home to vulnerable bird species including the great black-backed and herring gulls, cormorants, and shags.

It’s also covered in rubber bands.

This phenomenon has lasted for several years now, and conservationists only have theories to go on as to why. The leading explanation is that the birds have been confusing the rubber bands for worms.

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UK conservation charity the National Trust and the West Cornwall Ringing Group have been conducting research on the island since 2013 and believe the birds eat the bands somewhere in the area, bringing them back to Mullion island in their bellies, where they are regurgitated.

According to CNN, the researchers typically try to leave as few footprints on the island as possible, leaving its upkeep to the birds. That’s not an issue for others, as island access is restricted to those carrying a special permit. However, with litter on the island becoming a larger concern in recent years, a few conservationists traveled to Mullion in the fall to clean it up.

Source: Twitter/National Trust SW
Million Island has been littered with rubber bands.

“Single-use materials are having an alarming impact on our country’s most remote places,” said Lizzy Carlyle, head of environmental practices at the National Trust. “It’s up to all of us to take responsibility for how we use and dispose of these items—whether we’re producers or consumers.”

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“Within just an hour we’d collected thousands of bands and handfuls of fishing waste,” Mark Grantham, from the West Cornwall Ringing Group, said in a press release.

There is reason to believe the bands come from a horticultural operation nearby, where they are used to bundle flowers together before the stems are cut. The operation may not be aware of how or when the birds are eating the rubber bands, but the impact is no less threatening to the birds, a few species of which are dwindling.

“Despite being noisy and boisterous and seemingly common, gulls are on the decline,” said Rachel Holder, a ranger for the National Trust. “They’re already struggling with changes to fish populations and disturbance to nesting sites — and eating elastic bands and fishing waste does nothing to ease their plight.”

Source: Pixabay
A herring gull.

Facing the most imminent threat of extinction is the herring gull, currently on the UK’s Red List after decades of sharp decline. At least 60% of the herring gull population has vanished since 1969. The great black-backed gull population has fallen at half the rate of the herring gull, still enough to land it on the UK’s Amber List of vulnerable species.

“Places like Mullion Island should be sanctuaries for our seabirds, so it’s distressing to see them become victims of human activity,” Holder said.

Source: Wikimedia Commons
A great black-backed gull.

In the meantime, the National Trust is “calling on businesses to consider how they dispose of plastic, latex and other materials that could cause harm to wildlife.”

To get an idea of how big this island is (just 850 feet wide), check out the video below.

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Matthew Russell is a West Michigan native and with a background in journalism, data analysis, cartography and design thinking. He likes to learn new things and solve old problems whenever possible, and enjoys bicycling, going to the dog park, spending time with his daughter, and coffee.
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