Significados de nightingale droppings en inglés

You may not believe me when I tell you that this cream was made from nightingale droppings, but it's true.

As a remedy, they used a mask containing nightingale droppings that had enzymes said to break down dead skin cells.

The cream already contained unguent of nightingale droppings, as I've mentioned; so maybe it did her no harm, but it did give me satisfaction.