While I can understand that people may think in isolated group, is the most likely thing is that they're deply related to their neighboars, such as dominulans, shamans, zamoars & other highlanders, and there is not need to assume or postulate esterics origins from them or for the omens.
We know that Ornis is the direct ancestor of all Hornset or at least is their belief, we quite safely that Ornis had parents and like had a wife and children, and thus children most had get marry and have children of their own, so logically we can understand that they're related to other groups
However I will always support esoteric non-sense and the idea that numen can do Partogenesis, but even then I find weird the possibility that Ornis doing that, like, some guy doing self-Malepreg willingly? That is a weird take even if is one of my own... but also Musk did say he would do it if he could so... is not inaudit.
