Your little wren makes me think of spring because they will be showing up here at our farm soon and will sing all summer long in our front yard. Although there isn't much depth to the focus here, you nailed the focus at the most important part of the bird....its face. The eye is particularly sharp and intense. Thanks for reminding me about a little bird with attitude that I will be seeing soon.
Like the sharpness and eye contact. Do wish for a bit more DOF; I would have sacrificed a bit of SS to get it. I like the idea of cropping a little off the right.