Interestingly Kemet's ancient Faith correlated the bird as a metaphor of the soul. In Estonia's first nations associated the annual disappearance and reappearance of migrating birds with the spiritual realm as well.
The ancestry of the Roman alphabet from Kemetic (Ancient Egyptian hieroglyphs) to Semetic (early Hebrew) to Phoenician to Greek. (J, U, and W were late additions to the Roman alphabet.) The Ancient Egyptian name for their own writing system was "Metu Neter" - meaning divine speech. "Hieroglyphs" is a Greek word - "hieros" means "sacred", "glyph" means writing.