I was looking for an expert in bird sounds, not a critique of my experiences.
You claim bigfoot lives in clans, have you ever seen a clan? Has anyone on this site ever seen a clan? Pure conjecture.
You also claim that bigfoot are migratory. Did you install ankle bracelets on them to figure this out? I have personal experience that says they stay put in the winter, only closer to their inner sanctum.
I don't have confirmation bias, because I let the evidence speak for itself, and I ask others for their opinions. I don't just parrot what the rest of the so-called experts say, because actual factual evidence is rare, and too many assumptions are being made about it.