Beautiful photograph. The composition, the lines the simplicity... you have an eye for great photos. Great Job -9. (Not a Ten because it is not outside the box. Everything else though is absolutely perfect!!)
This is a nice capture of a Black Capped chickadee(my guess anyway) I like the background and the detail in the left side of the breast. I wish there had been a bit of detail in the eye area. Still a 6 though.
Very nice composition and he's nice and sharp. I just wish I could see more of the detail in his face. It might be a monitor difference, but most of his head is solid black here, as is the black patch at the top of his breast.
He looks rather smug and content, doesn't he? In scrolling down to comment, I think a bit of the top could be cropped, though the composition works well as it is, too. Lovely bokeh.
focus is ok, I can make out feather hairs, good. Color and saturation are good. Composition is ok, but too much blank space above. You might try this on landscape making the photo wider and not taller. And if it had a nice catchlight in the eye this would be one of the better shots I've seen today.
Nice job. I started using fill flash on birds to get the catchlight, it works and doesn't seem to bother them a bit.