An increased wetness in the winter refuge, a mountain fir forest west of Mexico City, will leave the butterflieswith no place to spend the cold months, she said Monday.

• 墨西哥城西部枞树林是帝王蝶过冬的地方,降雨量的增加会使得帝王蝶没有地方度过他们寒冷的冬天。