I am sure that hunters know this but until I started birding 4 years ago, I had no clue that ducks roosted, visited and flew up into trees. Just never occurred to me that they did that. So, I still think it is an incongruous sight to see a large duck, like this Black-bellied Whistling Duck to be up in a tree singing. Yet, here he is singing away. Whistling more like it as they have a strange song.
