It includes deep knowledge of Ayurvedic herbs, rare plants, and their supernatural or healing properties.

: One tradition attributes the text to Sridhar Swami , a 17th-century Bhakti saint. In this version, also known as "Nilkantha Charitra," the book follows the story of a celestial Nilavanti bird that teaches King Shrenik about righteousness, karma, and dharma.

The book is said to contain mantras and shlokas that allow the reader to understand the language of birds and animals. It also reportedly covers alchemy, spiritual enlightenment, and moral lessons. The "Cursed" Reputation:

In reality, texts like the Nilavanti Granth belong to a bygone era of Indian literature that blended natural science, astrology, and local folklore. During the medieval period, texts that detailed the behaviors of animals (like the chirping of lizards or crows) were common. Over time, oral storytelling exaggerated these natural observations into supernatural powers.