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 outcome occurs when elevated levels of abscisic acid (ABA) reach guard cells surrounding the stomata?
• Which risk increases for saltwater fish consuming excessive amounts of freshwater due to osmotic pressure imbalances?
• Which consequence occurs when a bird's air sacs are compressed reducing differential pressure?
• Which process triggers heat production when bats arouse from torpor?
• Which outcome occurs when the tympanic membrane of moths becomes insensitive specifically to bat calls at 20 kHz?
• Which effect results when coral bleaching increases urchin venom potency?