Has anyone else had a dog pop on a bird's whistle/call? There's one place where I train on water where at least half the time, my dog will pop because there's a bird call that sounds a lot like my whistle. I don't know what kind of bird it is and, of the five bodies of water there, it only happens on one of them. The call sounds almost identical to my old-school (pea inside) Mega whistle. It makes me wonder what would happen if this happened in a trial in terms of how judges would handle the situation. It seems to me that they really couldn't ding for popping since the dog heard a sound he thought to be a sit whistle.