Hummingbirds in the Peruvian Andes enter a state of torpor at night to conserve energy, dipping their body temperatures to as low as 38 degrees Fahrenheit. Christopher Intagliata reports.
Hummingbirds in the Peruvian Andes enter a state of torpor at night to conserve energy, dipping their body temperatures to as low as 38 degrees Fahrenheit. Christopher Intagliata reports.
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