Penguins bring forward breeding season as Antarctica warms: study

The unprecedented shift observed over a decade in penguin breeding patterns was "highly correlated" with rising temperatures on the frozen continent, said the study's lead author Ignacio Juarez Martinez. Penguin breeding is closely linked to food availability, and less sea ice has meant hunting grounds and nesting sites are more available during the year. Scientists observing penguin populations in Antarctica had expected breeding to occur a little earlier but were "very surprised both by the scale and the speed of the advance"...