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Print article During the darkest days of Alaska’s winter, black-capped chickadees stuff themselves with enough seeds and frozen insects to survive 18-hour nights. Where the chickadees spend those long nights was a mystery until a biologist tracked them. Susan Sharbaugh spent many winter nights trying to find out how a creature as light as a handful of paperclips survived temperatures of 40 degrees below zero. Sharbaugh is a biologist and a fan of the black-capped chickadee, one of the most unlikely residents of the north because of the difficulty of keeping a tiny body warm in a cold place. In her studies, Sharbaugh found that black-capped chickadees gained an additional 10% of their body weight each day by stuffing themselves. The birds then use that fat to shiver all night, which keeps them warm. The human equivalent would be a 165-pound man who spent a frigid night outside and emerged 15 pounds lighter by the next morning.

United statesUniversity of alaska fairbanksTom hahnSusan sharbaughNed rozellAlaska fairbanksBrooks rangeநியாயமான வங்கிகள்ஒன்றுபட்டது மாநிலங்களில்பல்கலைக்கழகம் ஆஃப் அலாஸ்கா நியாயமான வங்கிகள்டோம் ஹான்நெத் ரொஜெல்ல்அலாஸ்கா நியாயமான வங்கிகள்ஓடை சரகம்