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 consequence results when vasodilation is suppressed during hibernation?
• Which risk increases when foraging honeybees rely exclusively on outdated floral maps?
• Which risk increases when insect imaginal discs incorrectly specified?
• Which outcome occurs to warning cries when ambient noise increases?
• Which mechanism limits the altitude that avian species can soar effectively concerning thermals?
• Which adaptation increases soaring efficiency when thermal updraft strength decreases mid-flight for rapt птицы?