This might sound unappealing, but nightingale droppings have long been used in Japan to clear sunspots, acne marks and pigmentation.
这听起来可能没什么吸引力,但夜莺粪便长期以来在日本被用来清除祛斑、痤疮和色素沉着。
Attracting numbers of birds continually to the same spot can be harmful to them, particularly species that pick food from the ground contaminated by the droppings of other birds.