Mundak- A tale of 2 birds representing Jiva and the Consciousness. It is a poetic style Upanishad with 64 mantras in the form of Guru and Shishya samvaad (dialogue). This Upanishad contains 3 mundakam each with 2 sections. 1st mundakam defines the science of higher (para vidya) and lower knowledge(apara vidya) and asserts the acts of oblations and pious gifts are foolish due to it not reducing the unhappiness of life in this birth and next birth which only comes from the knowledge.
2nd Mundakam describes the Brahman, relationship between world and Brahman and path to know Brahman. 3rd Mundakam is an expansion of the second and then going into describing the state of knowing the Brahman.

Swami Abhedananda expounds on each section bringing out the beauty of Shankar Bhashya and establishing the Truth.