Which mechanism impairs avian flight during periods of prolonged heavy rainfall, increasing effective stall speed?

💡 Explanation

When heavy rain persists, water accumulates within the plumage, effectively increasing wing loading because the bird must carry the extra weight, shifting the lift to drag ratio and increasing stall speed. Therefore elevated wing loading hinders flying, rather than just camber reduction, drag increase or lift decrease that may reduce efficiency, but do not directly increase bird weight during flight.

• Which outcome impairs osmoregulation when a freshwater fish suffers gill damage?
• Which risk increases when a dipteran larva’s ecdysone production cycle malfunctions?
• Which primary risk increases for fish in highly polluted water which damages gill lamellae integrity?
• Which navigational failure arises in salmon when environmental change limits olfactory perception?
• Which physiological effect results when human cutaneous vasodilation is maximized during intense exercise?
• Which consequence results when nocturnal monarch butterflies encounter overcast conditions during peak migration?