Which consequence results when a soaring bird's air sacs malfunction during thermalling?

💡 Explanation

Impaired pressure equalization in the bird’s respiratory system hinders controlled soaring because air sacs balance the pressure. Inability to equalize via airsac ventilation reduces stability, therefore efficient soaring becomes problematic, rather than affecting functions like evaporative cooling.

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• Which consequence results when a soaring bird has insufficient air sac perfusion?