In a recent comment, Debbie wrote:
So, regarding the interchangeability of the Owl and the Hawk, maybe Hendrix said it best; "What if 6 turns out to be 9"?
This was in the context of the Hawk being the solar (yang) counterpart to the lunar (yin) Owl. This reminded me that in the I Ching, 6 and 9 represent the transitions between yin and yang. The number 6 is "old yin" (yin changing to yang), and 9 is "old yang" (yang changing to yin).
The yin-yang symbol even looks like a 6 and a 9, even though it long predates the use of Arabic numerals in China.
If 6 and 9 are yin and yang, then the owl corresponds to 6, and the hawk to 9. I've already posted syncs relating to six owls and the Six Owl Door. Debbie points out that the hawk is linked to the Egyptian god Ra. The Wikipedia article on Ra says: "As Atum or Atum-Ra, he was reckoned the first being and the originator of the Ennead ('The Nine')."