Which risk increases when waterfowl preen excessively, removing crucial feather oil?

💡 Explanation

When waterfowl over-preen, they remove waterproofing oils because oils are integral to barbule interlocking preventing water entry and maintaining an insulating air layer. Hypothermia results, rather than increased lift, hyperthermia, or reduced maneuverability, which depend on wing profile and drag.

• Which risk increases when Monarch butterflies' circadian rhythm misaligns?
• Which outcome is triggered by disruptions to avian olfactory maps during night migration?
• Which risk increases when marine fish experience limited ADH?
• Which behavior develops when light pollution obscures celestial cues for migratory songbirds?
• Which outcome predominantly results when birds lose barbules cohesion within primary flight feathers?
• Which process prevents respiratory failure when mallard ducks experience high wing loading during takeoff?