Last year I happened to look up in one of the trees behind our daughter's house and saw one of these. A day or two later I saw another one in another tree behind her house. These things are mean. Fortunately they never bothered anybody.
So reminiscent of The Scream by Edvard Munch! Fabulous image and even better to have the knot in the wood to echo the opening in the nest. Terrific textures show up so well in B&W!