Which risk increases when migratory birds encounter prolonged intense headwinds?

💡 Explanation

When birds experience intense headwinds, increased flight effort generates higher aerodynamic loads, causing greater frictional forces on the feathers,leading to accelerated wear and separation of barbs, significantly increasing drag. Therefore increased feather wear results, rather than atrophy, navigation issues or suppressed cortisol, which involve different physiological mechanisms.

• Which mechanism causes rapid ATP depletion from active muscle tissue during intense cold exposure and shivering thermogenesis?
• Which function disrupts bird flight when flight feathers suffer significant degradation from feather mites?
• Which outcome occurs when fish gills experience reduced water flow despite normal blood flow?
• Which acoustical camouflage outcome occurs when prey matches background noise?
• Which outcome results from ecdysone deficiency during larva's final molt?
• Which outcome results when rapid ascent bursts lungfish's swim bladder?