An emperor penguin colony in Antarctica had a run-in with a grounded iceberg that may have led to a disastrous breeding season.
On Coulman Island, which is home to one of the largest emperor penguin colonies on the planet, surviving chick counts declined by 69 percent in 2025 compared with the previous year. This may have been due to the sneaky shape of an iceberg grounding nearby, delaying the birds’ return from their foraging grounds with food for their young, scientists report July 23 in Communications Earth & Environment .
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When emperor penguin ( Aptenodytes forsteri ) chicks…
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