I got to say this is a photo of a bird more then a photo of bird watching. To me there is nothing in this photo that show passing time. But as a photo of a bird it is pretty good so a 5
The black and white feathers really pop! The focus on the bird looks pretty good, seems a tad soft, but that could just be from compressing the photo to the needed size.
The natural looking background and light work well, I think the muted tones of the bark help make the bird stand out. I do wish the full bird were in the image, it looks as if the tail was cut off, maybe if the image wasn't so tight on the bird that would help the composition, plus give just a bit more environmental background to add some more interest.
Over all the image is quite nice, the only really distracting portion is in that upper right hand corner where the light is glinting. I gave a 5
Good depth of field, but I think the focus may be a bit off (or camera shake). It's a good photo and a good idea, but the lack of sharpness really hurts it. Good idea though!