Which aerodynamic disadvantage is increased in birds soaring at very high altitudes due to reduced air density?

💡 Explanation

At high altitudes, reduced air density requires birds to increase their angle of attack to maintain lift during soaring, increasing the production of vortices behind the wing, resulting in higher induced drag. Therefore induced drag is increased, rather than other forms like profile or parasite drag, or effects on thrust, which depend on different mechanisms such as surface friction or frontal area.

• Which nutritional benefit arises within herbivores because of gut microbiomes?
• Which consequence results when anthropogenic noise masks bat biosonar signals?
• Which wing configuration change enables albatrosses to transition to dynamic soaring in variable winds?
• Which consequence results when increased environmental noise obscures honeybee dances?
• Which outcome occurs when guard cell turgor pressure drops excessively in plant leaves during drought conditions?
• Which aerodynamic consequence results from vultures utilizing thermal updrafts for soaring flight?