14-km iceberg cut off food supply, causing 69% drop in Antarctic penguin chicks

How one iceberg changed everything for Antarctic penguin colony When it comes to nature, it often reminds us that even the smallest change in the environment can ripple through an entire ecosystem. According to experts, in Antarctica, life depends on a fine balance of sea ice, open water and seasonal rhythms. A lone iceberg has shown just how fine that balance can be. The huge block of ice, which was nearly 14 kilometres long, was an unexpected hurdle for one of the world’s most iconic species – the emperor penguin. A research report published by Phys Org has found that the iceberg drastically altered penguins’ route to feeding grounds, making parents travel farther to find food. The research highlights that the outcome was shocking with numbers of emperor penguin chicks on Coulman Island falling by almost 69 per cent in one breeding season.How one iceberg changed everythingThe research was published in Communications Earth & Environment and focused on the emperor penguin colony at Antarctica’s Coulman Island during the 2025 breeding season. According to the report, researchers recorded a dramatic drop in chick numbers, with only 6,658 live chicks recorded during aerial surveys...