World’s largest penguin colony suffers ‘enormous population crash’
Chinstrap penguins on Zavodovski Island in Antarctica down by two-thirds since 2011, probably due to climate crisis
TL;DR
- The chinstrap penguin colony on Zavodovski Island has declined by two-thirds since 2011.
- Scientists believe the climate crisis is the most likely cause of this population crash.
- The decline increases the risk of a wider ecosystem collapse.
- Warming waters have forced the penguins' primary food source, Antarctic krill, to move south.
- Macaroni penguin numbers have increased, but not enough to offset chinstrap losses.
- Other causes such as food competition, human impact, and volcanic activity have been ruled out.