Strong points: Beautiful images of this woodpecker. Each of them individual would be a good shot by itself. Beautiful colours. Good detail and sharpness.
Possible weaknesses: The presentation. The images lined up without any borders/divisions make for a good series, but make the whole thing look a bit bland. The storyline is weak.
Technicals: Great colours, great detail and sharpness. Amazing you got this sharp at F5.6! Love the bokeh at the left in the top right image. The processing seems adequate for each individual image, although they might benefit from a tad more definition (shadow/highlights or curves or so).
Overall: A beautiful series of images, I almost think they would be better by themselves than arranged in a series.
I hope this helps. If I can be of further help, please let me know.