Which mechanism minimizes induced drag when an avian feather barb separates during flight?

💡 Explanation

When a barb separates, aerodynamic performance decreases; however, feather hooklets (barbicels) can re-engage due to their structure based on microscopic interlocking, quickly restoring the feather vane's integrity, because the hooklets provide a mechanical bond. Therefore, interlocking re-engagement minimizes induced drag rather than turbulence, angle adjustment, or absorbing radiation, which don't directly re-stabilize the disrupted feather structure.

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