camosynthetic,
I just responded to your PM with this same response, but I felt compelled to post it as well. Here's my reply:
24 bit sounds are definitely of a higher quality than 16 bit. There's no doubt about that. The question is what difference does it make to the predators? That is a tougher question to answer. My philosophy is this. 24 bit is like High Def is to the eyes, but only to the ears. Our ears are not nearly as sensitive as a predators ear, so you can assume that they can tell the difference much better than we do. Does that mean that scratched records won't work--of course not. But, do they work better--yes, I believe so. We are trying to convince a predator to come in to a call by fooling his ears--the better you fool him, the better the odds are in your favor of calling him in.