Why is still hunting more effective on windy or rainy days?

Still hunting becomes particularly effective during windy or rainy days because the natural sounds generated by the wind or rain help to mask the movements of the hunter. When the wind is blowing or rain is falling, these elements create background noise that can cover up the sounds a hunter might make while walking or changing position. Animals in the vicinity may be less likely to detect the hunter's presence since the sound of movement is less expected in such conditions where other noises are prevalent.

This technique takes advantage of the environmental factors, enabling hunters to move more stealthily without alerting their quarry. In contrast, on calm days, even slight noises made by a hunter could easily be picked up by sensitive game animals, making still hunting much more challenging. The other options do not accurately support the premise of still hunting effectiveness in these weather conditions.