Which outcome occurs when birds in arctic regions experience extreme cold despite insulation?

💡 Explanation

Uncontrolled shivering increases metabolic heat production to compensate for heat loss because shivering stimulates muscle contractions, thereby generating heat and preventing hypothermia; therefore shivering is the correct answer rather than peripheral vasoconstriction without shivering.

• Which auditory consequence results when the syrinx's labia become scarred in songbirds?
• Which consequence results when a hibernating arctic ground squirrel's den is flooded at 0 °C?
• Which risk increases when a bird's air sacs are compromised during high-altitude flight?
• Which physiological advantage results from cyclical operation of C4 photosynthetic pathways?
• Which outcome occurs when plants in seasonally arid environments maintain open stomata during midday?
• Which outcome of nitrogen depletion occurs when carnivorous plants capture prey?