On one part of the tablet there is a winged bird and a bird without wings. The winged bird is above and the other below; the text says the latter prevents the winged bird from flying away. Each eats the other’s tail, so it is a variation of the Ouroboros snake which eats its own tail.
Von Franz establishes the foundational alchemical dyad: the winged bird as the volatile, upward-tending principle locked in mutual constraint with its wingless counterpart in an ouroboric circuit.
, Alchemy: An Introduction to the Symbolism and the Psychology, 1980thesis