Other Antarctic seabird colonies have also suffered steep population declines as researchers warn that global warming will take a toll on many ice-dependent species in coming decades.
A series of ecological initiatives, including the eradication of several invasive species, has dramatically revived the life and landscape of this remote sub-Antarctic island.
The western side of the Antarctic Peninsula has seen sharp declines in Adélie penguin populations in recent decades. Things look better on the eastern side. Take a tour.
