Why are waterfowl difficult quarry?

Answer: D — They are strong fliers

Waterfowl are difficult quarry because they are strong fliers. Their powerful wings let them take off quickly from water, reach high speeds, and perform rapid, unpredictable maneuvers to evade a pursuing bird. They can sustain long flights and exploit wind currents to outrun and outmaneuver a falcon, which makes interception and successful stooping very challenging. This combination of speed, endurance, and evasive flight is what makes waterfowl notably tough to hunt with a raptor. They’re not particularly dangerous to handle, they swim well, and they’re typically diurnal rather than nocturnal, which doesn’t explain the difficulty in pursuit.