It's one of those cheery little tunes that gets into your head and just won't go away. Except I don't think I remember the lyrics quite right:
"When whippoorwills call and evening is nigh, I hurry to my blue heron.
Don't turn to the right, this road is all right, it leads me to my blue heron."
This cache is practically a park and grab, just an excuse to make a scenic side trip. And yes, we often see blue herons here.