A silverhootowl is a game old bird, mostly found in the backwoods of Missouri. They are known for their distinctive call. The only way to catch them is to clamp down on their muffler, which stops them dragging on the road. They have been seen as far afield as California and they fly to Hot Springs once a year for hibernation purposes.
Wow! Was that a silverhootowl that he saw? Yes it was, the distinctive muffler could be seen.