I went and watched his seminar on calling cougars at Cabelas. While there he demonstrated all the different vocalizations the he has and has heard. I now can no longer convince myself otherwise. All those times I tried to tell myself I didn't just walk past a potential den and those whistles were birds... Shattered! It was a great presentation once the mic got fixed...ish, and they turned down the music. I learned a little more than I knew before and will probably not feel as alone in the woods. It will help me stop wasting my time in a spot calling for dogs when I knew there's a kitty I don't have a tag for somewhere close.