题目选项分析

Like the grassy fields and old pastures that the upland sandpiper needs for feeding and nesting when it returns in May after wintering in the Argentine Pampas, in the northeastern United States, sandpipers' vanishing is due to residential and industrial development and to changes in farming practices.

Like the grassy fields and old pastures that the upland sandpiper needs for feeding and nesting when it returns in May after wintering in the Argentine Pampas, the bird itself is vanishing in the northeastern United States as a result of residential and industrial development and of changes in farming practices.