Which consequence occurs in soaring birds if calamus feathers experience increased wear?

💡 Explanation

Increased calamus feather wear leads to compromised rachis stiffness; this reduces surface area. The mechanism is profile drag. Therefore, wing has to work harder to stay aloft which increases the wing loading overall, rather than achieving stable flight or thermoregulation efficiency, affecting aerodynamic performance. rather than stability.

• Which outcome occurs when blood flow stalls during countercurrent exchange within fish gills at cold temperatures?
• Which risk increases if a bird species adapts toward highly slotted primary feathers?
• Which consequence results when asymmetrical wing loading affects bat echolocation?
• Which metabolic consequence results because legume productivity is limited?
• Which aerodynamic consequence occurs when raptor flight feathers experience excessive wear?
• Which outcome results when localized damage impairs imaginal disc function?