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torpor

hummingbird sleep

Scientists find hummingbirds practically freeze themselves at night

September 9th, 2020

Hummingbirds enter a state of semi-hibernation at night called torpor, and researchers studied them closely. The birds are able to reduce their body temperature to close to the ambient temperature of the air. In some cases, the birds’ body temperatures approached freezing. Hummingbirds are often seen as the most hyperactive of all the bird species. …