Is the World’s Penguin Population Declining?!

Zavodovski Island in the South Atlantic is no longer considered the place with the world’s largest concentration of penguins.

According to research, between 2011 and 2025 the number of Antarctic penguins nesting on the island fell by 63%. The number of breeding pairs dropped from about 542,000 to around 201,000.

As ocean waters warm and sea ice melts, krill — small crustaceans that are an important food source for penguins — are becoming less abundant and shifting farther south. This makes it more difficult for the birds to find food.

Researchers estimate that the Antarctic penguin population on the island is declining by an average of around 7% per year. This has been described as one of the fastest population declines recorded in scientific observations.

One of the largest penguin colonies on the planet is now located at Cape Adare in the Ross Sea, where Adélie penguins are the dominant species.

While Antarctic penguin numbers were falling, the population of golden-crested penguins on the island increased for a period of time. Between 2011 and 2016, their numbers rose by 28% before later stabilizing.

The International Union for Conservation of Nature (IUCN) currently classifies Antarctic penguins as a species at relatively low risk of extinction. However, given the situation on Zavodovski Island and in other parts of Antarctica, experts note that the species may require a higher level of protection in the future.