Zavodovski Island loses title of largest penguin colony
Chinstrap penguin population has declined by 63% since 2011, scientists report.
AI-assisted coverage comparison, editor-supervised · How this was made
Zavodovski Island
Photograph: NASA via Wikimedia Commons (Public domain)
What this story says
- Zavodovski Island, in the South Sandwich Islands, is no longer home to the world's largest penguin colony.
- Chinstrap penguin numbers on the island have fallen by 63% between 2011 and 2025, a loss of over half a million birds.
- Scientists attribute the decline to human-driven climate change, which is warming the ocean and disrupting the krill population, the penguins' primary food source.
- While chinstrap penguins declined, the island's macaroni penguin population increased by 28% between 2011 and 2016.
Who covered it
Percentages are shares of the 59 outlets carrying a published leaning rating. 16 of the 75 outlets we know ran this story carry no rating and are not counted in them. Coverage measured .
Trust
60/100
Craft
65/100
Hype
30/100
75 sources · methodology
Zavodovski Island, an uninhabited volcanic outcrop in the Southern Ocean, has lost its status as the location of the world's largest penguin colony. British Antarctic Survey researchers found that chinstrap penguin populations there declined by 63% between 2011 and 2025. This represents a loss of more than half a million penguins from the island.
Scientists attribute this significant population drop to human-driven climate change. They state that warming oceans are disrupting the krill population, which is the primary food source for chinstrap penguins. The research, published in the journal Current Biology, noted that the chinstrap penguin is a specialist species with a limited range that is being squeezed by environmental changes.
In contrast to the chinstrap penguins, the macaroni penguin population on Zavodovski Island increased by 28% between 2011 and 2016, after which it remained stable. Researchers suggested this difference supports the climate change theory, as macaroni penguins are more adaptable to warmer waters and have a more varied diet.
Divergent population figures
Reports provide differing figures for the total number of chinstrap penguins on Zavodovski Island in 2011 and 2025. KIFI, citing British Antarctic Survey findings, states the number of occupied nests fell by 63% between 2011 and 2025. The Independent and The Independent (US) report that the number of breeding chinstrap penguins fell from over a million to 400,000. Newser states chinstrap penguins plunged 63% since 2011, from roughly 1.09 million to 402,000 in 2025. NOS reports that in 2011, 900,000 hooded penguins and 90,000 macaroni penguins lived on Zavodovski Island.
What the coverage left out
None of the left, centre, or right-rated reports printed below mention the macaroni penguin population increase on Zavodovski Island.
Still developing. We have re-checked which outlets are covering this 5 times, most recently on 8 Oct 2026, 19:30, and will add the sides that appear.
How each side covered it
Our own reading of the reporting listed below, written from the outlets’ articles rather than quoted from them. The reasoning is set out on our methodology page.
Left
11 rated outlets
- Left-rated reports focused on the scale of the population collapse and its link to the climate crisis. Il Post, Merco Press, The Independent, The Independent (US), Common Dreams, Newser, and Cumhuriyet all highlighted the significant loss of penguins and attributed it to climate change or the climate crisis. Common Dreams used the word 'crash' to describe the population decline. Newser described it as an 'enormous crash'. Several reports, including The Independent and The Independent (US), noted the population fell from over a million to 400,000. Merco Press and Il Post stated the colony lost nearly two-thirds of its nests or specimens.
Centre
42 rated outlets
- Centre-rated reports from KIFI, The Japan Times, KEZI 9 News, Sky News UK, KCRA 3, WCVB, WLWT, and WMUR led with the loss of the island's title as the largest penguin colony. KIFI and The Japan Times reported that more than half a million chinstrap penguins were lost between 2011 and 2025, with The Japan Times specifying over 680,000. Sky News UK stated the colony shrunk by two-thirds in 14 years. KEZI 9 News, KCRA 3, WCVB, WLWT, and WMUR used the headline 'This island was home to the planet’s largest penguin colony. Here’s why it just lost that title'.
Right
6 rated outlets
- Right-rated reports from NDTV, khbrknews, Anadolu Ajansı, NOS, The Straits Times, and Free Malaysia Today News focused on the loss of the island's title due to climate change. NDTV and The Straits Times used the headline 'Climate Change Strips Island's Title Of Largest Penguin Colony'. Anadolu Ajansı reported the population fell by more than 680,000 between 2011 and 2025. NOS stated that climate change caused a rapid decline of chinstrap penguins on a British island, noting that in 2011, 900,000 hooded penguins and 90,000 macaroni penguins lived on Zavodovski Island.
Questions about this coverage
- How did the left and right cover Zavodovski Island loses title of largest penguin colony?
- Of the 59 outlets on this story carrying a published leaning rating, 19% are rated left, 71% are rated centre, 10% are rated right. Those percentages are shares of the rated outlets, not of every outlet that ran it, which was 75. The sections above set out what each side emphasised, in its own terms.
- Is Zavodovski Island loses title of largest penguin colony left or right?
- The story itself is neither. What can be counted is who has covered it, and 71% of the 59 rated outlets on it are rated centre — so far this is a story carried mostly by the centre. Coverage is still arriving and that can change, which is why the figure is dated rather than fixed.
- Is the coverage of Zavodovski Island loses title of largest penguin colony biased?
- Zavodovski Island loses title of largest penguin colony is one event reported by 75 outlets, and this page does not rate the story as biased or unbiased. What it publishes is the spread: which outlets ran it, where named rating organisations place each of them on the spectrum, and what each side chose to lead with. A leaning rating describes an outlet's record over time, not this article, and the two should not be run together.
- Which outlets covered Zavodovski Island loses title of largest penguin colony?
- 75 that we know of, every one of them listed further up this page with a link to its own report and to what we hold on the publisher. Nothing here is a summary of somebody else's summary: the outlets are named so the original reporting can be read.
- Why has Zavodovski Island lost its title as the largest penguin colony?
- Zavodovski Island has lost its title because the chinstrap penguin population has declined by 63% between 2011 and 2025. Scientists attribute this significant drop to human-driven climate change, which is warming the ocean and disrupting the krill population that the penguins rely on for food.
- How many penguins have been lost from Zavodovski Island?
- More than half a million chinstrap penguins have been lost from Zavodovski Island since 2011. Some reports specify this figure as over 680,000, while others state the population fell from over a million to 400,000.
- What is the cause of the penguin population decline?
- Scientists attribute the decline to human-driven climate change. The warming ocean is disrupting the krill population, which is the primary food source for chinstrap penguins. This makes it difficult for them to survive and reproduce in their habitat.
- Has every penguin species on the island declined?
- No, not all penguin species on Zavodovski Island have declined. While the chinstrap penguin population has fallen dramatically, the macaroni penguin population increased by 28% between 2011 and 2016, and has remained stable since then.
Read it at the source
75 outlets, grouped by the leaning a published rating gives them. Every headline links to the original; an underlined outlet name opens our profile of that publisher.
Left
11- The Largest Colony of Penguins Is No Longer (opens Il Post in a new tab)
- What was the world's largest penguin colony has lost nearly two thirds of its nests (opens Merco Press in a new tab)
Merco Press — is Merco Press biased? Our profile of this outlet
- World’s largest penguin colony loses two-thirds of its population (opens The Independent (US) in a new tab)
The Independent (US) — is The Independent (US) biased? Our profile of this outlet
- World’s largest penguin colony loses two-thirds of its population (opens The Independent in a new tab)
The Independent — is The Independent biased? Our profile of this outlet
- Climate Crisis Likely Caused World's Largest Penguin Colony to 'Crash' (opens Common Dreams in a new tab)
Common Dreams — is Common Dreams biased? Our profile of this outlet
- An 'Enormous Crash' at World's Largest Penguin Colony (opens Newser in a new tab)
- Penguin Population in Antarctica Dwindled: It Lost Its Title as the World's Largest Colony. (opens Cumhuriyet in a new tab)
Cumhuriyet — is Cumhuriyet biased? Our profile of this outlet
- Study: The Largest Colony of Penguins in the World Affected by Climate Change (opens La Presse in a new tab)
Show 3 more
- Iconic penguin colony sees "population collapse" driven by climate change, study finds (opens CBS News in a new tab)
- Half a Million Chinstrap Penguins Have Disappeared From the Sub-Antarctic Island of Zavodovski. The Cause Is the Warming of the Seawater. (opens NRC Handelsblad in a new tab)
NRC Handelsblad — is NRC Handelsblad biased? Our profile of this outlet
- Zavodovsky Ceases to Be the Place in the World with More Penguins After Losing Half a Million Specimens (opens El Pais in a new tab)
Centre
42- Climate change strips island’s title of largest penguin colony, study shows (opens The Japan Times in a new tab)
The Japan Times — is The Japan Times biased? Our profile of this outlet
- The Largest Penguin Colony in the World Loses More than Half a Million Specimens (opens KEZI 9 News in a new tab)
KEZI 9 News — is KEZI 9 News biased? Our profile of this outlet
- World's largest penguin colony shrinks two-thirds in just 14 years (opens Sky News UK in a new tab)
Sky News UK — is Sky News UK biased? Our profile of this outlet
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens MOR-TV in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KHBS in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WJCL in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KSBW in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WXII in a new tab)
Show 34 more
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WGAL in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WPBF in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WAPT in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KOAT in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WVTM in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WMTW in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WBAL-TV in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KMBC in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WPTZ in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KETV in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WISN in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KCCI in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WTAE in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WDSU in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WYFF in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens Koco News5 in a new tab)
Koco News5 — is Koco News5 biased? Our profile of this outlet
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WLKY in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WMUR in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WLWT in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens WCVB in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KCRA 3 in a new tab)
- Climate change strips island's title of largest penguin colony: study (opens France24 in a new tab)
- Half a Million Chinstrap Penguins Have Disappeared From the Sub-Antarctic Island of Zavodovski. (opens cedarnews.net in a new tab)
cedarnews.net — is cedarnews.net biased? Our profile of this outlet
- Inside the Collapse of Earth's Largest Penguin Colony (opens National Geographic in a new tab)
National Geographic — is National Geographic biased? Our profile of this outlet
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens kioncentralcoast.com in a new tab)
kioncentralcoast.com — is kioncentralcoast.com biased? Our profile of this outlet
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KMIZ in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KESQ in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KEYT in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KVIA in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KRDO in a new tab)
- This island was home to the planet’s largest penguin colony. Here’s why it just lost that title (opens KIFI in a new tab)
- Why this remote volcanic island lost Earth’s largest penguin colony (opens Euronews in a new tab)
- World's largest penguin colony hit by climate-driven decline (opens BBC News in a new tab)
- World’s once-largest penguin colony is in perilous decline (opens Science in a new tab)
Right
6- Climate Change Strips Island's Title Of Largest Penguin Colony: Study (opens NDTV in a new tab)
- World’s largest penguin colony shrinks two (opens khbrknews in a new tab)
- World's Largest Penguin Colony Loses Nearly Two-Thirds of Population Amid Climate Change: Study (opens Anadolu Ajansı in a new tab)
Anadolu Ajansı — is Anadolu Ajansı biased? Our profile of this outlet
- Climate Change Causes Rapid Decline of Chinstrap Penguin on the British Isles (opens NOS in a new tab)
- Climate change strips Zavodovski island of largest penguin colony (opens The Straits Times in a new tab)
The Straits Times — is The Straits Times biased? Our profile of this outlet
- Climate change strips island’s title of largest penguin colony (opens Free Malaysia Today News in a new tab)
Free Malaysia Today News — is Free Malaysia Today News biased? Our profile of this outlet
Not rated
16- A Chilling Discovery in Antarctica: Two-Thirds of a Huge Penguin Colony Have Disappeared! What Happened? (opens topky.sk in a new tab)
- The Largest Penguin Colony in the World, Decimated by Climate Change (opens Mediafax in a new tab)
- Inside the collapse of earth's largest penguin colony (opens ecotopical.com in a new tab)
ecotopical.com — is ecotopical.com biased? Our profile of this outlet
- The Largest Penguin Colony in the World Has Decreased by Two Thirds (opens L'INDIPENDENTE in a new tab)
L'INDIPENDENTE — is L'INDIPENDENTE biased? Our profile of this outlet
- The Largest Colony of Penguins in the World Is "in Danger", Argues a Study (opens sciencesetavenir.fr in a new tab)
sciencesetavenir.fr — is sciencesetavenir.fr biased? Our profile of this outlet
- The Largest Colony of Penguins in the World Lost Two Thirds of Its Population: Scientists Are Worried About the Collapse of the Ecosystem (opens nin.rs in a new tab)
- The Largest Colony of These Penguins Is Rapidly Disappearing (opens Telegraf in a new tab)
- Study: More than a Quarter of the Population Has Died in the World's Largest Penguin Colony (opens Karar Gazetesi in a new tab)
Karar Gazetesi — is Karar Gazetesi biased? Our profile of this outlet
Show 8 more
- More than a Quarter of the World's Largest Penguin Colony Has Died. (opens Habertürk in a new tab)
- Research / The World's Largest Penguin Colony Has Lost Almost 2/3 of Its Population (opens TV Χωρίς Σύνορα in a new tab)
TV Χωρίς Σύνορα — is TV Χωρίς Σύνορα biased? Our profile of this outlet
- World's Largest Penguin Colony Shrinks Two-thirds In Just 14 Years (opens Great Yorkshire Radio in a new tab)
Great Yorkshire Radio — is Great Yorkshire Radio biased? Our profile of this outlet
- World's Largest Penguin Colony Faces Decline Due to Climate Change (opens themondonews.com in a new tab)
themondonews.com — is themondonews.com biased? Our profile of this outlet
- BAS Announced that More than 500,000 Penguins Have Died in Zavodovski Since 2011. (opens Haberler in a new tab)
- Scientists Have Recorded the Disappearance of Half a Million Penguins From the Island in Antarctica. (opens Life.ru in a new tab)
- World's Largest Penguin Colony Suffers 'Alarming' Decline in Penguin Numbers (opens NU in a new tab)
- The Number of Beard Penguins in the Largest Colony in the World Has Dropped by Almost Two-Thirds . . Press Agency Rador (opens rador.ro in a new tab)
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