Which effect occurs when avian wing feathers experience excessive wear reducing barb overlap?

💡 Explanation

Excessive feather wear causes a reduction in barb overlap, leading to increased air leakage through the wing because this disrupts the aerodynamic smoothness, hindering lift generation efficiency. Therefore, reduced lift efficiency results, rather than decreased stall angle, improved insulation, or enhanced camouflage, which depends on different feather attributes.

• Which mechanism elevates coral reef productivity under nutrient-poor conditions?
• Which developmental constraint limits butterfly wings forming mismatching patterns after asymmetrical imaginal disc damage during pupation?
• How does gas exchange happen across capillaries in a fish swim bladder?
• Which outcome occurs when marine cartilaginous fish face environmental hypertonicity?
• Which primary risk increases for fish in highly polluted water which damages gill lamellae integrity?
• Which neurological outcome occurs when venom binds neuromuscular receptors?