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Climate Change Influencing Penguin Breeding Season in Antarctic

29th January 2026
Adélie, chinstrap and gentoo penguins in Antarctica, where breeding is now starting up to three weeks earlier, researchers say.
Adélie, chinstrap and gentoo penguins in Antarctica, where breeding is now starting up to three weeks earlier, researchers say Credit: David Merron

Antarctic penguins are breeding up to three weeks earlier in response to climate change, a new study says. The study published in the British Ecological Society’s Journal of Animal Ecology was led by Penguin Watch at the University of Oxford and Oxford Brookes University.

The decade-long research concludes that these changes threaten to disrupt penguins’ access to food, increasing concerns for their survival. 

“We are very concerned because these penguins are advancing their season so much, and penguins are now breeding earlier than in any known records,” the report’s lead author, Dr Ignacio Juarez Martínez, told The Guardian newspaper.

“The changes are happening so fast that the penguins could end up breeding at times when their prey is not available yet,” he said.

“ This could result in a lack of food for the penguin chicks in the first weeks of their life, which could be fatal,” he said.

The researchers examined changes in the timing of penguin breeding between 2012 and 2022, focusing on the period from their “settlement” at a colony, as in the first date at which penguins continuously occupied a nesting zone. 

Three species – Adélie (Pygoscelis adeliae), chinstrap (P antarcticus) and gentoo (P papua) – were studied, with colony sizes ranging from a dozen nests up to hundreds of thousands of nests.

Read The Guardian HERE 

The study can be accessed HERE 

Published in Marine Wildlife
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Marine Wildlife Around Ireland One of the greatest memories of any day spent boating around the Irish coast is an encounter with marine wildlife.  It's a thrill for young and old to witness seabirds, seals, dolphins and whales right there in their own habitat. As boaters fortunate enough to have experienced it will testify even spotting a distant dorsal fin can be the highlight of any day afloat.  Was that a porpoise? Was it a whale? No matter how brief the glimpse it's a privilege to share the seas with Irish marine wildlife.

Thanks to the location of our beautiful little island, perched in the North Atlantic Ocean there appears to be no shortage of marine life to observe.

From whales to dolphins, seals, sharks and other ocean animals this page documents the most interesting accounts of marine wildlife around our shores. We're keen to receive your observations, your photos, links and youtube clips.

Boaters have a unique perspective and all those who go afloat, from inshore kayaking to offshore yacht racing that what they encounter can be of real value to specialist organisations such as the Irish Whale and Dolphin Group (IWDG) who compile a list of sightings and strandings. The IWDG knowledge base has increased over the past 21 years thanks in part at least to the observations of sailors, anglers, kayakers and boaters.

Thanks to the IWDG work we now know we share the seas with dozens of species who also call Ireland home. Here's the current list: Atlantic white-sided dolphin, beluga whale, blue whale, bottlenose dolphin, common dolphin, Cuvier's beaked whale, false killer whale, fin whale, Gervais' beaked whale, harbour porpoise, humpback whale, killer whale, minke whale, northern bottlenose whale, northern right whale, pilot whale, pygmy sperm whale, Risso's dolphin, sei whale, Sowerby's beaked whale, sperm whale, striped dolphin, True's beaked whale and white-beaked dolphin.

But as impressive as the species list is the IWDG believe there are still gaps in our knowledge. Next time you are out on the ocean waves keep a sharp look out!