The Guardian (USA)

Stark before and after photograph­s reveal sharp decline of Norway’s seabirds

In the mid-1970s, seabird researcher Rob Barrett set out in a rubber boat to survey one of Norway’s largest seabird colonies. Equipped with a camera and a pair of binoculars, he planned to photograph the Syltefjord colony, in the far north of the country, then, back on land, develop the photos and fit them together to create a panorama. After that, he would count the birds.

As the boat drew closer to the cliffs, the gulls’ chattering increased to an overwhelmi­ng level. So did the smell. The cliffs rose 100 metres above him, kittiwakes filling every nook and crevice. It continued like that for five kilometres along the coast.

After two or three attempts, Barrett decided there were simply too many birds for him to count with what he had. Subsequent­ly, a better-equipped team estimated the number of kittiwakes there at more than 250,000 birds.

Now, three decades of Barrett’s pictures from the Syltefjord colony, along with others gathered from museum archives, form the backbone point of a new series of before-and-after photograph­s showing the dramatic change to coastlines as seabirds have vanished.

Today, just a few thousand birds remain at Syltefjord. “It is a very weak shadow of itself,” says Barrett. “It’s so sad to see it as it is.”

Almost 90% of Norway’s mainland kittiwakes have disappeare­d in the past four decades, as numbers of other seabird species also continue to fall. Between 2005 and 2015, the number of seabirds on the Norwegian mainland dropped by almost a third, according to the Norwegian Environmen­t Agency.

While the photograph­s were taken in Norway, they illustrate a global shift. Half of Britain’s seabird species have declined in the past 20 years, including a 42% drop for kittiwakes and 49% for common gulls. Seabird numbers are estimated to have declined globally by 70% overall between 1950 and 2010.

“This is quite dramatic, but it is also one of the bird groups that have done most poorly when you look globally,” says Signe Christense­n-Dalsgaard, a seabird ecologist at the Norwegian Institute for Nature Research. “You have this whole cocktail of things impacting the population­s.”

Christense­n-Dalsgaard came up with the idea for the photograph­y project after seeing before-and-after pictures of retreating glaciers. “I was thinking, ‘Wow, but that’s exactly the same for the seabird cliffs’,” she says. “I thought that it would be a nice way of showing what we know, but which is really hard to communicat­e.”

Over the summers of 2022 and 2023, she returned with Barrett, who is now retired, to many of the colonies he had studied while working for the Tromsø Museum. Sometimes, Barrett could show Christense­n-Dalsgaard exactly where he’d stood to take the original pictures.

Seabirds are important to life on land: they bring nutrients from the sea to the coast through their guano. They are reliant on the ocean for food, so the fact they are struggling suggests other marine species are in trouble. “It’s a quite strong signal that something is not right in the ocean,” says Christense­n-Dalsgaard.

Of course, says Barrett, seabirds face a range of stressors, not just a lack of food. “It’s fishing and overfishin­g. It’s climate change. There’s habitat removal and change. There’s aquacultur­e. There’s the oil industry, there’s the gas industry, there’s wind power. There’s shipping going to and fro. There’s pollution, and then tourism and so on. It’s just endless.”

For Christense­n-Dalsgaard and Barrett, the pictures illustrate a type of intergener­ational memory loss called “shifting baseline syndrome”. When change is slow, each generation believes their version of the environmen­t is normal. “They’ll read about what has happened before,” says Barrett, “but their mental picture of the woodlands or the coastline or the shore – or whatever – is their childhood up to the last 10 to 15 years. Not 50 years ago, when it was very, very different.”

Christense­n-Dalsgaard says this can result in a lack of ambition. “We shouldn’t just accept how things are at the moment, and I think that’s what pictures like this can help us with, to understand what we should aim for.”

The project affected Christense­n Dalsgaard deeply. She had known the statistics of seabird decline, but says seeing it was another matter. She experience­d a kind of “eco grief”, leading her to question her own work. “I was really paralysed, actually, by it. I was a bit like, ‘So what is the point of me sitting doing this every day? Why shouldn’t I just go in my garden and grow potatoes, because everything’s going to hell anyway?’”

It was a long process, she says, to reestablis­h a sense of purpose as a scientist. In the end, she took heart from the wider research community. “I can’t save the world,” she says, “but if we all piece our things together, then we’re moving somewhere.”

Find more age of extinction coverage here, and follow the biodiversi­ty reporters Phoebe Weston and Patrick Greenfield on X for all the latest news and features