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Common Poorwill
[Phalaenoptilus nuttallii]
[Length 7.75 in. Wingspan 17 in.]
The Common Poorwill is the only bird known to go into an extended state of torpor (like hibernation) so it can survive several weeks or months without eating.
During the winter when food is scarce, it can slow its metabolic rate to lower its body temperature as low as an amazing 41° Fahrenheit, and reduce its oxygen consumption by more than 90%!
Native Americans of the Hopi tribe were probably aware of the this behavior, as the Hopi word for the bird, hölchko, means "The Sleeping One".
This Common Poorwill was photographed at Cave Creek Canyon, Arizona, USA.
Photo taken (by flashlight!) with a Nikkor 300mm ED f4.5 lens on Ektachrome 200 film.
(Date: May 1985)
(use image name "poorw" for inquiries)
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