Look, "crazy old coot" is a Western Movie staple, and Richard Jenkins played that role as well any I suppose. I'll admit that. However, I would have gone with "loose cannon" instead as a side kick. That guy from Lost just sort of stood there the entire movie. Boring!
I did enjoy the neck wind pipe flute idea, but couldn't help but wonder on how they could prevent making the noise with every breath they took.
And, why leave the pregnant ones alive on the way out????