This proverb often refers to someone who appears to be pure or well-intentioned but resorts to questionable or unethical methods to achieve their goals. The ‘takatra’, a type of heron, is known for building its nest using all kinds of materials, including impure substances. The proverb resembles the English adage ‘actions speak louder than words,’ emphasizing that one’s true nature is revealed by their actions rather than their outward appearances.