Sporty little bird Dan, I love wrens and their boundless energy. I like the colors in this image and the wren is nice and sharp with a great shouting pose!
In a perfect world the leaf would not be skimming the wren's body, but man-o-man what a dynamic image! I love it! Perfect focus on the eye, and the vertical comp is well thought out.
you sure are nailing some nice poses with bill wide open. I can hear the song :-) loved the comp. eyes, bill, perch and both feet sharp...that is perfect.