This is a very pretty photograph - I like the Nuthatch-like pose that these guys often do. Some more sharpening, especially to the face area, could bring this to another level.
I really like the pose and background. This is a nice image. The only things I might think about would be adding a bit to the bottom and taking a touch off the top. I like it very well as presented though.
Excellent image of a B&W. Nice background with a typical behavior pose for this species. I might consider some more sharpening on the bird and perhaps open the crop up a bit to give more breathing room.
Very nice image. These guys are a real target species for me this spring so I'm jealous. I would like to see some more room on the bottom and less on top if you have it.
I like the pose and details of this wannabe nuthatch. Maybe you could have moved a bit to the right to get an even better separation between bird and trunk.