At night, when the mercury dipped below freezing, the wet chicks froze.
"Many, many, many of them—thousands of them—were dying," Explorer Bowermaster said.
The experience, he added, painted a clear and grim picture of the impact of global climate change.
"It's not just melting ice," he said. "It's actually killing these cute little birds that are so popular in the movies."
The freezing of chicks is just one example of how human activity is endangering about two thirds of all penguin species, according to a new paper based on decades of research and observations.
The conservation biologist behind the paper, Dee Boersma of the University of Washington, points out some of the many ways penguins are suffering, such as by ingesting oil from spills, by being run over by tourists, by having their nesting times confused by climate change, and by losing their prey to changing currents.
Sad.
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