Scientists identify a new penguin species for the first time in more than 100 years

For the first time in over a century, scientists have identified a new species of penguin, the southeastern gentoo, Pygoscelis kerguelensis. Found on the remote Kerguelen Islands in the Indian Ocean, this discovery was made through a thorough genomic analysis of 64 penguins from 10 breeding colonies across their range. Previously, gentoo penguins were classified as a single species due to their similar appearance, but the new analysis revealed four distinct species: northern, southern, eastern, and the southeastern gentoo.

The southeastern gentoo, previously thought to be a cryptic species, exhibits subtle differences in size and vocalizations, but genetic differences are more pronounced. These four species diverged approximately 300,000 to 500,000 years ago due to geographic isolation, environmental differences, and possibly their diet and breeding habits.

The southeastern gentoo's genetic distinctiveness was known to scientists through specimens collected on Kerguelen Island in 1897, but its unique status was only revealed through modern genomic techniques.