Which effect occurs when migratory birds encounter icing conditions that affect feather barbules?

💡 Explanation

When icing conditions occur, ice accumulates on feather barbules because of rapid cooling, reducing their ability to interlock and maintain the airfoil shape during flight, leading to disrupted airflow. Therefore, flight maneuverability is reduced, rather than mite infestation, decreased heat loss or pigment damage, which involve different biological mechanisms.

• Which outcome results when ecdysone signaling is disrupted specifically within imaginal discs of a caterpillar?
• Which mechanism mediates the effects of elevated atmospheric carbon dioxide on plant transpiration rates?
• Which limit in nutrient availability MOST impacts the C4 photosynthetic pathway efficiency relative to standard C3 pathway?
• Which outcome occurs when an animal relies solely on short-term olfactory maps during migration?
• Which developmental constraint directly limits discontinuous growth for arthropods during molting stages?
• Which osmoregulatory stress arises when migratory salmon enter freshwater?