One of the largest colonies of gentoo penguins in Antarctica was decimated by volcanic eruptions several times during the last 7,000 years according to a new study. (sciencedaily.com)
Following the arrival of gentoo penguins along the West Antarctic Peninsula, native Adelie penguins have experienced population declines. (natureworldnews.com)
Peninsula Adélie and chinstrap penguins are declining (the Adélies significantly), while gentoo penguins are booming. (dotearth.blogs.nytimes.com)