Passage Summary: Wood ducks are sneaky and will put their eggs in another duck's nest if they can see it. While this rarely happens in nature, human-made nesting boxes are so easy to spot that they get overstuffed with eggs, causing the breeding effort to fail.

Reasoning: Wood ducks lay eggs in others' nests when visible; natural nests are hidden, but man-made boxes are visible; visibility leads to overcrowding, which prevents eggs from hatching.

Analysis: This stimulus describes a classic case of unintended consequences where human intervention disrupts a natural balance. The facts establish a causal chain: visibility leads to parasitism, which leads to overcrowding, which leads to reproductive failure. We are looking for a deduction that links these steps, likely concluding that the nesting boxes are less effective for reproduction than natural nesting sites. Avoid any choices that make broad claims about wood duck behavior outside the context of these specific nesting conditions.